Question

AABC- PQR 25 X A(APQR) = 36 X A( AABC). If BC = 20 then find QR.​

Answer 1

Step-by-step explanation:

We know that the area of similar triangles ae proportional to the squares of their corresponding sides

∴

A(△PQR)

A(△ABC)

=

QR

2

BC

2

Let BC=x cm. Then,

25

36

=

6

2

x

2

x

2

=

25

36×36

x=(

5

6×6

)

x=

5

36

=7.2 cm.