ΔPQR is similar to ΔSTU

MATHEMATICS · Single correct · CBSE · Mathematics · Triangles · Triangles

Problem

ΔPQR is similar to ΔSTU. The area of ΔPQR is 49 cm² and the area of ΔSTU is 81 cm². If QR = 14 cm, what is the length of TU? (a)

10.9\text{ cm}

(b)

23.1\text{ cm}

(c)

18\text{ cm}

(d)

21\text{ cm}