### Home > MC2 > Chapter 9 > Lesson 9.3.3 > Problem 9-107

9-107.

A triangle is enlarged by a scale factor of

If the perimeter of the enlargement is

m, find the perimeter of the original triangle. According to the Math Notes box from Lesson 9.2.2:

The perimeter ratio isscale factor. This can be represented by the following equation with the original perimeter defined as

.If the area of the enlarged triangle is

square meters, what is the area of the original triangle? According to the Math Notes box from Lesson 9.2.2:

The area ratio is. . square meters