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? enter your answer in the box.

Explanation:

Step1: Find side - length of square

The area formula of a square is $A = s^{2}$, where $A$ is the area and $s$ is the side - length. Given $A = 144$ square inches. Solve for $s$:
$s=\sqrt{A}=\sqrt{144}=12$ inches.

Step2: Calculate perimeter of square

The perimeter formula of a square is $P = 4s$. Substitute $s = 12$ inches into the formula:
$P=4\times12 = 48$ inches.

Answer:

48