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The perimeter of rhombus is 20cm. If one of its diagonal is 6cm,then its area is

Posted by Anubhav C 4 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Harsh Tehlan 4 years, 3 months ago

Ppppppppppppppooooooooooooooooooooooorrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrnnnnnnnnnnnnnnnnnnnnn

Param Sidhu 4 years, 3 months ago

Given perimeter =20cm Hence each side =20/4=5cm Let ABCD be a rhombus where AC and BD are diagonals There in ∆ABC area is : {AB+BC+CA=5+5+6=16 Hence semiperimeter is 16/2=8cm} Now using Hero's Formulas: →√{s(s-a)(s-b)(s-c)} →√{8(8-5)(8-5)(8-6)} →√(8*3*3*2) →√(16*9) →√144 →12cm² Since area of rhombus is 2 times the area of triangle 2*12cm² 24cm². Hence the area of rhombus is 24cm² when its perimeter is 20cm and one of its diagonal is 6cm Thanks...... [Tip : Always draw a diagram of geometrical problems whether finding area or solving problems in geometrical,,,,] PARAM SIDHU

Param Sidhu 4 years, 3 months ago

Given perimeter =20cm Hence each side =20/4=5cm Let ABCD be a rhombus where AC and BD are diagonals There in ∆ABC area is : {AB+BC+CA=5+5+6=16 Hence semiperimeter is 16/2=8cm} Now using Hero's Formulas: √{s(s-a)(s-b)(s-c)} √{8(8-5)(8-5)(8-6)} √(8*3*3*2) √(16*9) √144 12cm² Since area of rhombus is 2 times the area of triangle 2*12cm² 24cm² Hence the area of rhombus is 24cm² when its perimeter is 20cm and one of its diagonal is 6cm Thanks...... [Tip : Always draw a diagram of geometrical problems whether finding area or solving problems in geometrical,,,,] PARAM SIDHU(name)

ANSWER

how herons formula is used in rectangle

Posted by Taha Maqbool 4 years, 3 months ago

CBSE > Class 09 > Mathematics

4 answers

Brajesh Prajapati 4 years, 2 months ago

Heron formula is √s-a, s-b s-c a+b+c\2

Ridhima Khitta 4 years, 2 months ago

By dividing that rectangle into triangle and then taking out area simple

Param Sidhu 4 years, 3 months ago

When we construct a diagonal in rectangle we get two congruent triangles and area of congruent triangle are equal in measure so if you get area of one triangle formed after constructing a diagonal the atea of rectangle would be two times the area of that triangle or just multiply area of that triangle with 2 you will get area of rectangle

Tanishka Panchal 4 years, 3 months ago

It is used when you draw one diagonal then you get two triangle then find the area of both triangle and add the area

ANSWER

In figure , AB and CD are parallel lines and transversal EF intersects them at P and Q respectively. If angle APR=25°, Angle RQC=30°and angle CQF=65°,them

Posted by Noor Pathan 4 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

5^x-3(2x-3) =625

Posted by Dipal Varia 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Param Sidhu 4 years, 3 months ago

625=5*5*5*5 →625=5^4 Hence =5^x-3(2x-3)=625→5^x-3(2x-3)=5⁴ (equal base will get canceld we will remaining with powers only) →x-3(2x-3)=4 →x-6x+9=4→-5x=4-9→-5x=-5→x=-5/-5→→x=1 Therefore the required value of x is 1

ANSWER

3X-4=56

Posted by Shubh Sharma 4 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Jaiditya Sinha 4 years, 3 months ago

X = 20

Harshit Bhatnagar 4 years, 3 months ago

3x=56+4 3x=60 x=60/3 x=20

Shubh Sharma 4 years, 3 months ago

3X=56+4 3X=60 X=60/3 X=20

ANSWER

How we find cofficients

Posted by Komal Yadav Khola 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Sree Ranga K 4 years, 3 months ago

Hi

ANSWER

If x is a positive real number and x² =2 then x³ =

Posted by Kagap Hale 4 years, 3 months ago

CBSE > Class 09 > Mathematics

4 answers

Jaiditya Sinha 4 years, 3 months ago

2√2

Sandhya Prajapati😘😘 4 years, 3 months ago

3

Dhatri Garg 4 years, 3 months ago

If x^2 is 2 then x= sqrt2 then x^3 = (sqrt2)^3= 2sqrt2

Krish Chaurasiya 4 years, 3 months ago

X3

ANSWER

Find 10 retional number between 7/8 and 8/9

Posted by Ellina Murmu 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Sandhya Prajapati😘😘 4 years, 3 months ago

78/99,79/99,80/99,81/99,82/99,83/99,84/99,85/99,86/99,87/99

ANSWER

Construct a triangle ABC in which BC=7cm, <B=75°and AB+AC=13CM

Posted by Bharat Tyagi 4 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

(32)¹/5 ×(125)¯¹/³ in its simplified form will be

Posted by Aryan Sahare 4 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Rithish B 4 years, 3 months ago

2/5

Sandhya Prajapati😘😘 4 years, 3 months ago

Answer is 7

ANSWER

The perimeter of a right triangle is 60cm and its hypotenuse is 26cm. Find The other two sides of the triangle

Posted by Vandana B 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Sim Ahmed 4 years, 3 months ago

17 each

ANSWER

The dimensions of a room are (9m×8m×6.5m) . It has one door of dimensions (2m×1.5m) and two windows, each dimensions (1.5m×1m) find the cost of white washing the wall at Rs 6.40 per square metre .

Posted by Sanket ... 4 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Sanket ... 4 years, 3 months ago

Hi Diksha

Diksha Laniya🐥 4 years, 3 months ago

Hiii

Sanket ... 4 years, 3 months ago

Total surface area of the room=2(lh+lb+hb)m 2 =2[9×6.5+9×8+8×6.5]m 2 =365m 2 Area of the door =l×b=2×1.5=3m 2 Area of the windows=l×b=1.5×1=1.5m 2 ∴ Surface area of walls=TSA of room −Area of door−Area of windows =365−3−1.5=360.5m 2 Cost of whitewashing per square meter=Rs. 6.40 ∴ Cost of whitewashing the walls=Rs. 6.40×360.5 =Rs. 2307.2.

ANSWER

5. the side of a square is twice as long as the side of another square. how much more is the perimeter of the first square than the second square

Posted by Naren Pranav 4 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

What is type of graph

Posted by Thirumala Gowtham 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Aastha Costin 4 years, 3 months ago

Histogram graph ,pie graph,bar graph , Double bar graph

ANSWER

1 √9−√8 is equal to_______

Posted by Ani Sha 4 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Krishna Patel 4 years, 3 months ago

3+2√2

Ani Sha 4 years, 3 months ago

3+2√2

ANSWER

To verify that angles in the same segment of a circle are equal

Posted by Aakanksha Purohit 4 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Sanket ... 4 years, 3 months ago

Good job ???????

Harshita Drall 4 years, 3 months ago

I don't know

ANSWER

Theorem 11.3

Posted by Shamshad Banu Khan 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Aditya Shokeen 4 years, 3 months ago

Quadrilateral becf is a parallelogram

ANSWER

Show that a=(1,-1),b=(2,6)and c=(0,-8)lie on the graph of the linear equation 7x-y=8

Posted by Manish Kumar 4 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

The side of quadrilateral taken in order are 3cm 4cm 5cm and 6cm respectively and the AC is equals to 20 3M how many area does it occupy

Posted by Pratiksha Pawar 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Pratiksha Pawar 4 years, 3 months ago

Please tell me

ANSWER

If `barx` represents the mean of n observations `x_(1), x_(2),………., x_(n)`, then values of `Sigma_(i=1)^(n) (x_(i)-barx)`

Posted by Abisri Swaminathan 4 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

ए प्लस बी का होल स्क्वायर

Posted by Shreya Yadav 4 years, 3 months ago

CBSE > Class 09 > Mathematics

4 answers

Mànyà Jain 4 years, 3 months ago

(a+b)²=a²+b²2ab

Khushi ^_^ 4 years, 3 months ago

(a-b)²=a²+b² -2ab

Khushi ^_^ 4 years, 3 months ago

(a+b)²=a²+b²+2ab

Shreya Yadav 4 years, 3 months ago

N

ANSWER

Factorise 144×-289y

Posted by Raiput Aaditya 4 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Subhra Mishra 4 years, 3 months ago

(12)^2 × (17)^2 {12×17}^2 {204}^2 41616

Harshita Drall 4 years, 3 months ago

I don't know

Raiput Aaditya 4 years, 3 months ago

Aaj Tak hai Jaan hai january month the other family members of the other family members of the citizen of the other hand the citizen of which are the other hand the citizen of India Today the other hand the wildcats held and the citizen and the wildcats the wildcats held Stanford law school the citizen of India Today conclave the citizen of which are both well and that the other family the other hand the other family the best of which are you doing recently the other hand if you are not in the citizen of which were and the wildcats the other day that I have to be able to do it in the citizen of the other hand I have been working on it again the other day that I have to be the other hand the other family the best way to get the citizen of India Today the other day and night and night and I have a great time in mumbai dobara of the wildcats held and the citizen of the other hand the citizen of India Today conclave the wildcats held the other day and the wildcats the other family and friends of the citizen of which are the other hand the other family the best of which are both well I have to be able to be the first the other day and night and the wildcats the other hand the wildcats held and the citizen of the other day and the wildcats their and I have a great time in the wildcats held the other hand the other family and friends of the wildcats held and the citizen of India Today the other day and night and the wildcats the other hand the other day I have a Little bit more about your help in the wildcats held the other family members and the citizen of which are you doing this to be a good time to be able to get to be able the citizen of India and the other day that I will be the first the other hand the citizen of the other family members of which are the other hand the wildcats held and the citizen of which are both well and that is the other family members to be able and willing I have to be the first the citizen of the other day and I have been a Little bit more about this to the other hand the other family members and I am a good morning please find my resume for me to do it for me and the other hand if you doing today my siste and I have to be a good time

ANSWER

Thales was the citizen of which country

Posted by Raiput Aaditya 4 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Mànyà Jain 4 years, 3 months ago

Greece

Mr. King 4 years, 3 months ago

France

ANSWER

p(x) = √?3 + 1 is not a polynomial. Give reason

Posted by R Prashanth 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Ishita Sirse 4 years, 3 months ago

It's not a polynomial because polynomials contain variables with non negative exponents and rational variable and √ is irrational

ANSWER

How multiply root

Posted by Sri Hari 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Sanket ... 4 years, 3 months ago

√2×√2 = 2

ANSWER

Chapter 8 exercise 8.1 question no. 9 please tell me fast.

Posted by Diksha Laniya🐥 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Sanket ... 4 years, 3 months ago

AD || BC and BD is a transversal. ∴ ∠ADB = ∠CBD [ ∵ Alternate interior angles are equal] ⇒ ∠ADP = ∠CBQ Now, in ∆APD and ∆CQB, we have AD = CB [Opposite sides of a parallelogram ABCD are equal] PD = QB [Given] ∠ADP = ∠CBQ [Proved] ∴ ∆APD ≅ ∆CQB [By SAS congruency] (ii) Since, ∆APD ≅ ∆CQB [Proved] ⇒ AP = CQ [By C.P.C.T.] (iii) Since, AB || CD and BD is a transversal. ∴ ∠ABD = ∠CDB ⇒ ∠ABQ = ∠CDP Now, in ∆AQB and ∆CPD, we have QB = PD [Given] ∠ABQ = ∠CDP [Proved] AB = CD [ Y Opposite sides of a parallelogram ABCD are equal] ∴ ∆AQB = ∆CPD [By SAS congruency] (iv) Since, ∆AQB = ∆CPD [Proved] ⇒ AQ = CP [By C.P.C.T.] (v) In a quadrilateral ∆PCQ, Opposite sides are equal. [Proved] ∴ ∆PCQ is a parallelogram.

ANSWER

Ashish has a clock with a triangular frame .It's dimensions are 20 cm,24cm, 24 cm।One of the edges of the frame is cracked। Ashish puts tape along the boundary twice ।What is the length of the tape put around the frame

Posted by Naina Sahu 4 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

The angles of quadrilateral are in the ratio 1:2:3:4.find the smallest angle of the quadrilateral

Posted by Sakshi Kalappanavar 4 years, 3 months ago

CBSE > Class 09 > Mathematics

4 answers

Ak Present Kumar 4 years, 3 months ago

Hi sakshi, I can solve this At first we have to take their ratios as 1x, 2x , 3x and 4x. A.T.Q, 1x+2x+3x+4x = 360 10x = 360 x = 360/10 x = 36 So now we calculate 1x so 1(36) = 36 Now, 2x so 2(36) =72 Now, 3x so 3(36) = 108 Now, 4x so 4(36) = 144 So in this question , the smallest angle of quadrilateral is 1x which is 36. I hope you are satisfied with my solution.?

Ak Present Kumar 4 years, 3 months ago

Hi sakshi, I can solve this At first we have to take their ratios as 1x, 2x , 3x and 4x. A.T.Q, 1x+2x+3x+4x = 360 10x = 360 x = 360/10 x = 36 So now we calculate 1x so 1(36) = 36 Now, 2x so 2(36) =72 Now, 3x so 3(36) = 108 Now, 4x so 4(36) = 144 So in this question , the smallest angle of quadrilateral is 1x which is 36. I hope you are satisfied with my solution. ?

Ak Present Kumar 4 years, 3 months ago

Hi sakshi, I can solve this At first we have to take their ratios as 1x, 2x , 3x and 4x. A.T.Q, 1x+2x+3x+4x = 360 10x = 360 x = 360/10 x = 36 So now we calculate 1x so 1(36) = 36 Now, 2x so 2(36) =72 Now, 3x so 3(36) = 108 Now, 4x so 4(36) = 144 So in this question , the smallest angle of quadrilateral is 1x which is 36. I hope you are satisfied with my solution. ?

Ak Present Kumar 4 years, 3 months ago

Hi sakshi, I can solve this At first we have to take their ratios as 1x, 2x , 3x and 4x. A.T.Q, 1x+2x+3x+4x = 360 10x = 360 x = 360/10 x = 36 So now we calculate 1x so 1(36) = 36 Now, 2x so 2(36) =72 Now, 3x so 3(36) = 108 Now, 4x so 4(36) = 144 So in this question , the smallest angle of quadrilateral is 1x which is 36. I hope you are satisfied with my solution. ?

ANSWER

How to solve under root

Posted by Shruti Singh 4 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

2√6_√5 3√5_2√6

Posted by Masooma Zahra 4 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

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