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How angles in same segment are equal

Posted by Nancy Rana 8 years, 3 months ago

CBSE > Class 09 > Mathematics

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Find the area of rhombus whose perimeter is 100m and one of whose diagonal is 30m

Posted by Kashish Taank 8 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Sneha Sneha 8 years, 3 months ago

So now, area of rhombus = 1/2* d1*d2 therefore, 1/2*30*40= 600sq cm

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Sneha Sneha 8 years, 3 months ago

Firstly, we know that all sides of a rhombus are equal therefore it's perimeter = 100m so, it's one side = 100/4=25m one diagnol = 30m =30/2 =15m so by pythagorus theorem,we have =20m second diagnol = 2*20 =40m

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Naveen Sharma 8 years, 3 months ago

Perimeter of Rhombus = 100 m
Side of Rhombus = {tex}{100\over 4}= 25 m {/tex}

One diagonal of Rhombus (d₁) = 30 m
Second diagonal of rhombus = d₂

As we know, diagonal of rhombus bisect each other at 90 degree. So,
{tex}d_1^2+d_2^2= 4(side)^2\\ =>900 + d_2^2 = 4\times 625\\ => d_2^2 = 2500-900=1600\\ => d_2 = 40{/tex}

Area of rhombus = {tex}{1\over 2}\times d_1\times d_2\\ = {1\over 2}\times 30\times 40 \\ = 600 m^2{/tex}

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1+1??

Posted by Laxmi Nair 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Shubham Sharma 8 years, 3 months ago

1+1=2

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Area of circle

Posted by Subhash Shina 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Golua Singham 8 years, 3 months ago

Area of circle is πr^2

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Can we put kink on y-axis

Posted by Rohan Kumar Jha 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Golua Singham 8 years, 3 months ago

Yes of course you can put kink on y axis

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A matchbox measure 4cm ×

Posted by Swati Paikray 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Golua Singham 8 years, 3 months ago

Plz compete you question..........

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Prove that sum of Opposite angles of cyclic parallelogram is supplymentry.

Posted by Shivani Gusain 8 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Golua Singham 8 years, 3 months ago

I think you must see example 6 of chapter 10.........I hope you can get your answer

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Varun Banda 8 years, 3 months ago

Given : Let ABCD is cyclic quadrilateral.

To prove : ∠A + ∠C = 180° and ∠B + ∠D = 180°.

Construction: join OB and OD.

Proof :

∠BOD = 2 ∠BAD ∠BAD = 1/2∠ BOD

Similarly∠BCD = 1/2 ∠DOB ∠BAD + ∠BCD

= 1/2∠BOD + 1/2 ∠DOB

=1/2(∠ BOD + ∠DOB)

= (1/2)X360° = 180°

Similarly ∠B + ∠D = 180°

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a-b 7a3-b3 133 and find the values ab a2 b2

Posted by Hemavarsha T 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

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Area of a cube of 78 cm a side.

Posted by Amudhan .A 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Golua Singham 8 years, 3 months ago

TSA=6(78)^2 =6(6084)=36504 LSA=4(78)^2 =4(6084)=24336

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Posted by Amudhan .A 8 years, 3 months ago

CBSE > Class 09 > Mathematics

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What is the area of a cube of 78 cm a side.

Posted by Amudhan .A 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Siddharth Murali 8 years, 3 months ago

468

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Locate Root 7 on the number line

Posted by Hemavarsha T 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Shivam Malik 8 years, 3 months ago

First we have to divide it in two parts square root of 4 and square root of 3 then represent.

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Mid point theorems

Posted by Aditi Bajaj 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Alisha Akhtar 8 years, 3 months ago

8.9 is mid point theorem

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Mid point theouram

Posted by Aditi Bajaj 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Shivangi Singhal 8 years, 3 months ago

U can take help of rd sharma.

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What is the area of the triangle sides 100,100,200and why?????

Posted by Yogesh Waldia 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Golua Singham 8 years, 3 months ago

Sorry ,I think.......your question is wrong because in triangle a+b>c

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What is pictograph

Posted by Nischal Jain 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Happy Sharma 8 years, 3 months ago

It is a type of graph in which data is arranged in the form of pictures.

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If a2+b2=25 And a3+b3=91 then find the value of A and B not use hit and trial meathod please give me answer quickly

Posted by Gautam Kumar 8 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Gautam Kumar 2 years, 8 months ago

Ya is it possible try again

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Gautam Kumar 8 years, 3 months ago

Ya answer is a=3 b=4

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Gunjan Kumar 8 years, 3 months ago

No it is not possible to find answer by using formula.but a=4 and b=3

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The side of a triangular are in the ratio of 3:5:7 and its meter is 300m find its area

Posted by Santosh Raaz 8 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Abhi Yadav 8 years, 3 months ago

Let 3:5:7 be x 3x+5x+7x=300m 15x=300 X=300/15 X=20 3x=3×20=60 5x=5×20=100 7x=7×20=140 ?

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Golua Singham 8 years, 3 months ago

Let 3:5:7 be 3x ,5x,7x respectively 3x+5x+7x=300 15x=300 x=300/15 = 20 Hence, 3x=20×3=60 5x=20×5=100 7x=20×7=140

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Define harmonic motion

Posted by Gunjan Kumar 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Saumya Pandey 8 years, 3 months ago

an oscillatory motion where restoring force is directly proportional to the displacement but acts in opp... direction of displacement

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The side of a triangular are in the ratio of 3:5:7 and its meter is 300m find it's area

Posted by Santosh Raaz 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

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Give the theorem 8.3of NCERT class 9 maths book of chapter 8 with solution

Posted by Kristima Kashyap 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Golua Singham 8 years, 3 months ago

If each pair of opposite sides of a quadrilateral is equal ,then it is a parallelogram. Let a quadrilateral ABCD in which there is a diagonal AC. Now, AD=BC DC=AB AC=AC ∆ABC is congruent to ∆CDA By sss congruency criteria AngleBAC = angleDCA ( cpct) Hence, AngleBCA=angleDAC(alternate interior angle) Hence ABCD is a parallelogram

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Proove that the line joining the mid point of diagonal of trapezium is parallel to parallel side of trapezium

Posted by Surbhi Rai 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Golua Singham 8 years, 3 months ago

See.............I hope that you had studied mid point the pram according to it the line segment joining the mid points of two side of triangle is pareelel to the third side. In this case of trapezium the diagonal divides it in two triangles . Mid point of one diagonal of trapezium also bisects one side of trapezium,hence mid point of diagonal of trapezium is pareelel to the third side. It is becoming difficult to tell you it's answer but if you understand mid point their am well thank you can get its answer..

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Using heron's formula find the area of an equilateral triangle with side 16 cm

Posted by Surya S 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Surya S 8 years, 3 months ago

Sides are 16 cm,16 cm,16 cm Semi perimeter=a+b+c÷2 16+16+16÷2 48÷2=24 cm. Area of triangle=√s(s-a) (s-b) (s-c) √24(24-16)(24-16)(24-16) √24×8×8×8 √3×8×8×8×8 =64√3 cm2

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Sgbcrh

Posted by Raman Dhillon 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

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I dnt like geometry

Posted by Dhairya Bhatt 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

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Hshshdhddhbxcbcbcjgjfkfkc

Posted by Dhairya Bhatt 8 years, 3 months ago

CBSE > Class 09 > Mathematics

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ABCD is a trapezium in which AB // DC. Prove that are(∆AOD)=ar(∆BOC)

Posted by Shivani Gusain 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Golua Singham 8 years, 3 months ago

∆ADC and ∆BDC lie on the same base DC and same paralles AB and CD Area(∆ADC)=Area(∆BDC) Subtracting DOC from both= Area(∆ADC)-Area(∆DOC)=Area(∆BDC)-Area(∆DOC) Area(∆AOD)=Area(∆BOD)

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find the marks velocity of 1 48 976

Posted by Ashish Singh 8 years, 3 months ago

CBSE > Class 09 > Mathematics