Correct option is D
Given:
∆ABC ~ ∆PQR (Similar triangles)
Perimeter of ∆ABC = 36 cm
Perimeter of ∆PQR = 24 cm
PQ = 10 cm
Concept Used:
The ratio of perimeters of two similar triangles is equal to the ratio of their corresponding sides.

Solution:
Substitute PQ = 10cm
AB = cm
AB = 15cm
