The perimeters of two similar triangles ABC and PQR are 78 cm and 46.8 cm, respectively. If PQ = 11.7, then the length of AB is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 19.5 cm.
Ratio of Perimeters of two similar triangles ABC and PQR = AB : PQ
So,
78 : 46.8 = AB : 11.7
⇒ AB = 19.5 cm