CBSE > Class 09 > Mathematics | CBSE Board | Homework Help

Hello girl... By using theorem 8.1 A diagonal of a parallelogram divides it into two congrute triangles means area also will be same And AEFD is a parallelogram and AEF is a triangle and a trangle is half of parallelogram then 102/2=51 and 51 divide in to two triangle 51/2=25.5

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ABCD is a parallelogram of area 102 cm².If E and F are the mid-point of sides AB and CD respectively,then find the area of AEFD

Posted by Yashika Lalwani 3 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Nikil Rawat 3 years, 1 month ago

First draw a figure in your notebook so that you can get a clear idea of the question. If ABCD is a parallelogram and we join the mid points of opposite sides then we can say that now the parallelogram is divided into two new quadrilateral which are equal. So, AEFD = BEFC Now we are given with the area of parallelogram which is 102cm square. We can say that AEFD + BECF = Area of parallelogram ABCD. Since AEFD = BECF the we can put AEFD in the place of BECF. AEFD + AEFD = 102cm 2AEFD = 102CM AEFD = 102/2 AEFD = 51cm square. HOPE THIS WAS HELPFUL

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Pranjal Gupta 3 years, 1 month ago

Month day

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3 - 2

Posted by Abhijeet Shukla 3 years, 1 month ago

CBSE > Class 09 > Mathematics

4 answers

Suprabha Barik 3 years, 1 month ago

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Priyanshi Tripathi 3 years, 1 month ago

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Ishta Mahour 3 years, 1 month ago

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Anushka Rajput 3 years, 1 month ago

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P(t)=2+t+2t

Posted by Jeevika Jeevika 3 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Priyanshi Tripathi 3 years, 1 month ago

I thing the correct answer is 5 because when we put the value of t is 1 so the answer is 5 ...u can put different values of t and u can fine different answers

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Vineet Yadav 3 years, 1 month ago

2/3

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(a-b)4

Posted by Anmol Singh 3 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Vineet Yadav 3 years, 1 month ago

4a-4b

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Mansi Rani 3 years, 1 month ago

Answer

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3/4 + 2/3

Posted by Preet Sagar 3 years, 1 month ago

CBSE > Class 09 > Mathematics

4 answers

Abhijeet Shukla 3 years, 1 month ago

3/4 + 2/3 = 3×3/12 + 2×4/12 = 9+8/12 = 17/12

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Vineet Vishwakarma 3 years, 1 month ago

Q.¾ + ⅔ Sol. ¾+⅔ Taking LCM of 4 and 3= 12 3/4 ×3/3= 9/12 2/3×4/4=8/8 9+8/12= 17/12

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Prabhat Kumar 3 years, 1 month ago

3 upon 4 + 2 upon 3 is equels to 17 upon 12

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Deep Kumar 3 years, 1 month ago

Hey! Preet Sagar = ¾ + ⅔ = 9/12 + 8/12 (by taking L.C.M of 4 and 3) = 17/12 Answer.

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The perimeter of triangular field is 450 m and the sides of triangular field is given in ratio 13:12:15 .find the area of triangular field by using heron's formula

Posted by Anushka Rajput 3 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

What are a 0 is a rational number

Posted by Namreta Thakur 3 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Anushka Rajput 3 years, 1 month ago

Yes

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Find the area of the triangle whose side are 42cm, 34cm and 20cm

Posted by Bhoomika Reddy 3 years, 1 month ago

CBSE > Class 09 > Mathematics

3 answers

R Samiksha 3 years, 1 month ago

336 cm sq

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Khushbu Tripathi 3 years, 1 month ago

Given sides of the triangle are in ratio 42 : 34 :20 Semi perimeter - 42 + 34 +20 /2 = 96/2 =48 By heron 's formula = √ s ( s - a ) ( s - b) (s - c ) √ 48 (48 - 42 ) (48 - 34 ) ( 48 - 20 ) √ 48 ×6 ×14 × 28 √ 2×2×2×2×3×2×3×2×7×2×2×7 2×2×3×2×7×2 = 336 cm square

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Khushbu Tripathi 3 years, 1 month ago

336 cm square

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100+150

Posted by Vetrivel N.K 3 years, 1 month ago

CBSE > Class 09 > Mathematics

5 answers

Shreya Pandey 3 years, 1 month ago

250

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Account Deleted 3 years, 1 month ago

250

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Tushar Kumar 3 years, 1 month ago

100+50=250

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Vetrivel N.K 3 years, 1 month ago

38808÷1000

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Khushbu Tripathi 3 years, 1 month ago

250

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2√2=78

Posted by Aditya Patel 3 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Prabhat Kumar 3 years, 1 month ago

√2=39

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Tushar Kumar 3 years, 1 month ago

√2=69

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Chapter -15 Probability?

Posted by S Varsha 3 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Prabhat Kumar 3 years, 1 month ago

It is very interesting chapter

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Ajay lives in delhi find value

Posted by Sareena Sareenausman 3 years, 1 month ago

CBSE > Class 09 > Mathematics

3 answers

Prabhat Kumar 3 years, 1 month ago

249 201

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Tushar Kumar 3 years, 1 month ago

2√2

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Aditya Patel 3 years, 1 month ago

2√2

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Ajay livesin jaipur

Posted by Sareena Sareenausman 3 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Aditya Patel 3 years, 1 month ago

Sgedi

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2 +2 =

Posted by Rohit Kumar Lodha 3 years, 1 month ago

CBSE > Class 09 > Mathematics

5 answers

Radhika Lohchab 3 years, 1 month ago

1Thank You

Khushbu Tripathi 3 years, 1 month ago

0Thank You

Meer Sayeed 3 years, 1 month ago

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S Varsha 3 years, 1 month ago

2 + 2 = 4

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Chakkra Dev 3 years, 1 month ago

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How to find area of rhombus

Posted by Het Vaddoriya 3 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Prabhat Kumar 3 years, 1 month ago

One upon 2 X d1 into D2

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Shaurya Singhal 3 years, 1 month ago

It can be find by 1/2 xd¹xd²

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Ajay live in delhi the city of father in law's residence is at jaipur is 600km from Delhi......

Posted by Dark Gamer 3 years, 1 month ago

CBSE > Class 09 > Mathematics

3 answers

Avaneesh Korde 3 years, 1 month ago

ye sirf question hai

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Dark Gamer 3 years, 1 month ago

ajay lives in delhi the city of ajay's father in law residence is at jaipur is 600 km from delhi ajay's travel to 600 km partly by train and partly by car he used to buy cheap items from the delhi and sell at jaipur and also cheap items from jaipur and sells at delhi once from delhi ti to jaipur in forward journey he covered 2x km by train and rest y km by taxi but while returning he did not get a reservation form jaipur in the train so first 2y km he had to travel by taxi and the rest x km by train from delhi to jaipur he took 8 hours but in returning lit took 10 hours class 9th case based questions for class 9th maths chapter 4 Questions Find value of x and y In delhi to jaipur journey how much distance did he travel by train How much distance did he travel by taxi in both sides How much distance did he travel by train in both sides journey subject maths

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Ritik Ghusinga 3 years, 1 month ago

Yeh Kya hai

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The internal and external diameter of a hollow hemispherical vessel are 24cm and 25 cm respectively. The cost of paint 1sq.cm of surface is Rs1.75. Find the total cost to the nearest rupee to paint the vessel all over . Ignore the area of the edge

Posted by Alex Moon 3 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Side of a triangle are in the ratio of 12:17:25 and its perimeter is 540 cm. Find its area?

Posted by Bhavik . 3 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Bhoomika Reddy 3 years, 1 month ago

Given sides of the triangle are in ration 12:17:25 Perimeter=540cm a=12 𝒙 b=17 𝒙 c=25 𝒙 Perimeter=540 a+b+c=540 12𝒙 + 17𝒙 + 25𝒙 =540 54𝒙 =540 𝒙=540÷54 𝒙 = 10„, a=12𝒙=12×10=120 b=17𝒙=17×10=170 c=25𝒙=25×10=250 S=a+b+c 2 S=540 2 S=270„ By herons formula A=√s(s-a)(s-b)(s-c) =√270(270-120)(270-170) (270-250) =√(270×150×100×20 =√a×30×30×5×5×20×20 =√3²×30²×5²×20² =3×30×5×20 a=9000cm²

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Arjav Anand 3 years, 1 month ago

9000cm²

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What is √77.

Posted by Adarsh Yadav 3 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Congruency types

Posted by Aditya Pal 3 years, 1 month ago

CBSE > Class 09 > Mathematics

4 answers

Suprabha Barik 3 years, 1 month ago

1.SSS 2.RHS 3.ASA 4.SAS 5.AAS

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Abhijeet Shukla 3 years, 1 month ago

1.SSS 2.SAS 3.ASA 4.RHS

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Adarsh Yadav 3 years, 1 month ago

1.SSS. 2.SAS. 3 AAS.4. RHS..

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Adarsh Yadav 3 years, 1 month ago

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In a quadrilateral ABCD AC is equals to AD and ab bisects angle a show that triangle ABC is congruent to Triangle ABD

Posted by Aditya Pal 3 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

125.38÷8

Posted by Krishna Vimal 3 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Prabhat Kumar 3 years, 1 month ago

15. 6725

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If x+y=w+z,then prove that AOB is line

Posted by Rajat Yadav 3 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Prabhat Kumar 3 years, 1 month ago

X + y is equals to w + z X+ Y + w + said is equals to 360 X + y + X + y is equals to 360 2x + 2 y is equals to 360 X + y is equals to 360 upon 2 X + y is equals to 180 Hence aob is straight

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Khushbu Tripathi 3 years, 1 month ago

Given x+y = w+z To prove ; AOB is a line x+y+w+z = 360 ( reflex angle ) x+y = w+z w+z+ w+ z = 360 2w + 2z = 360 2(w+z) = 360 w+z = 360/2 = 180 Hence prove : AOB is a line

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Chapter 7 exercise 7.1 8 summ

Posted by Abhi Yadav 3 years, 1 month ago

CBSE > Class 09 > Mathematics