Question

Sonya wants to sew ribbon along each side of a square pillow. If the pillow has an area of 144 square inches, how much ribbon would she buy to have the exact amount she needs

Answer 1

area of a square equals the length of one side squared:


`a = {length}^(2)`

to find the length of one side:

`length = √(area)`

Plugging in:

`length = √(144 ) = 12`

Since there are 4 sides to a square we multiply the length of one side (12 inches) by 4 to see all the way around.


`12 * 4 = 48`

Sonya would need 48 inches