CPM Homework Banner

Home > MC2 > Chapter Ch9 > Lesson 9.3.3 > Problem 9-107

9-107.

A triangle is enlarged by a scale factor of .

  1. 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 is  scale factor.

    This can be represented by the following equation with the original perimeter defined as .

  2. 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