Question

Shape A and Shape B are mathematically similar. The scale factor of their surface areas is 9. What is the scale factor of their lengths?

Answer 1

scale factor of lengths = 3

Explanation:

Given 2 similar figures with scale factor of lengths = k

Then scale factor of areas = k²

Given

scale factor of areas = 9 , then

scale factor of lengths =
`√(9)` = 3