Question

The area of a square is 36 inches. If the side of this square is doubled, the area of the new square will be a. 72 square inches b. 108 square inches c. 216 square inches d. 244 square inches e. none of the above

Answer 1

d

Explanation:

the area (A) of a square is calculated as

A = s² ( s is the side length )

given A = 36 in² , then

36 = s² ( take square root of both sides )

`√(36)` =
`√(s^2)` , that is

6 = s

if s is doubled , that is

s = 2 × 6 = 12 in , then area of new square is

A = 12² = 12 × 12 = 144 in²