Question

Triangle ABC similar to triangle pqr if area of triangle ABC equal to 25 squares and area of pqr = 49 square cm and QR equals to 9.8 cm find BC

Answer 1

bonjour dear!

given:area

triangle ABC =64 cm

area PQR =120 cm

since both triangles are similar  

so,

64/121=(BC/QR)^2

64/121=(BC/15)^2

8/11=BC/15

BC=8×15/11=10.909cm

hope this helps

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Answer 2

HEY DEAR ... ✌️

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Here's , ur answer :-


Solution =)


It is given that .

Also, QR = 9.8 cm. We have to find BC.

We know that the ratio of the  areas of two similar triangles is equal to the ratio of the squares of their corresponding sides.

∴ 

Hence, BC = 7 cm.


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HOPE , IT HELPS ... ✌️