Question

triangle ABC triangle pqr area of triangle ABC is equal to 225 CM square and area of triangle pqr=121 cm square.if altitude AD of triangle ABC is 15cm then find the altitude of triangle PQR​

Answer 1

Answer:

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

∴

ar(ΔPQR)

ar(ΔABC)

=

QR

2

BC

2

⇒

121

64

=

(15.4)

2

BC

2

⇒

11

8

=

15.4

BC

⇒BC=

11

8×15.4

=11.2cm