Question

A square has side length of 4.3 in. If the area is multiplied by 4, what happens to the perimeter?

a. The perimeter is multiplied by 1/2.
b. The perimeter is multiplied by 4.
c. The perimeter is multiplied by 1/4.
d. The perimeter is doubled.

Answer 1

The perimeter is doubled.

Explanation:

Answer 2

Perimeter is doubled

4.3•4.3=18.49 (area of original square)
18.49•4=73.96 (area of 4x square)
Sqrt (74.96)=8.6 (side of 4x square)
4.3•4=17.2 (perimeter of original square)
8.6•4=34.4 (perimeter of 4x square)
34.4/17.2=2
2=double