Question

A right triangle has an area of 13 m2. The dimensions of the triangle are increased by a scale

factor of 3. What is the area of the new triangle?
39 m2
169 m2
117 m2
142 m2

Answer 1

117 m²

Explanation:

Given the scale factor of the enlargement is 3 , then

the area is increased by a factor of 3² = 9

area of new triangle = 9 × 13 m² = 117 m²