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 must she buy to have the exact amount that she needs?
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Answer 1

We are given area of the ribbon = 144 square inches.

We know formula for side of a square = $\sqrt{Area \ of \ a \ square }$.

Plugging value of area in the formula, we get

Side of the square $= \sqrt{144}$

= 12 inches.

Sonya wants to sew ribbon along each side of a square pillow.

So, we need to find the perimeter of the square pillow.

Perimeter = 4 × side = 4 × 12 = 48 inches.

Therefore, she buy 48 inches of ribbon to have the exact amount that she needs.