Question

The perimeter of two similar triangle ABC and PQR are respectively, 72 cm and 48
cm. If PQ = 20 cm, find AB.
(Ans: 30cm)​

Answer 1

Answer:

Answers is 24.49

Step-by-step explanation:

area of abc / area of pqr = AB^2 / PQ^2

put the value of PQ and area of abc and area of pqr.

solve the equation.

you will get the answer

Answer 2

Answer:

30cm

Step-by-step explanation:

triangleABC similar to trianglePQR

Hence ,Perimeter of triangle ABC/perimeter of triangle PQR=AB/PQ

72cm/48cm=AB/20cm

AB=72cm×20cm/48cm

AB=30cm