Question

The area of a regular octagon is 25 square cm . What is the area of a regular octagon with sides five times as large as the sides of the first octagon?

Answer 1

When you change a dimension, it will change EACH dimension in the measurement you are finding.

Area is a two dimensional measurement, so you will need to multiply each dimension by 5, which is the same as multiplying the area by 25.

So, 25 square cm x 5 x 5= 625 square cm.

The area of the new OCTAGON is 625 square cm.