Question

Brent wants to make a frame for a painting. The painting is square and has area 144 square inches. The framing material costs ​$1.10 per inch. How much will he ​spend? You may assume that the framing material Brent buys will be the exact amount he needs.

Answer 1

$52.80

Explanation:

Area = side²

144 = side²

side = 12 in

Perimeter = 4 × side

= 4 × 12 = 48 in

Cost = 48 × 1.10

= 52.80

Answer 2

52.80

Explanation:

We can determine the side length of the painting

A = s^2 for a square painting

144 = s^2

Taking the square root of each side

sqrt(144) = sqrt(s^2)

12 = s

We need to find the perimeter for the painting

For a square painting

P =4s

P = 4*12

P = 48

Multiplying by the cost per inch

1.10 * 48 =52.8