Question

anna is making a square pen for her rabbit to play in. each side of the pen is 9 feet long. the formula for the area of a square is a = s², where a stands for the area and s is the length of one side. what is the area of the pen? a. 9 square feet b. 18 square feet c. 36 square feet d. 81 square feet

Explanation:

Step1: Identify side - length value

Given $s = 9$ feet.

Step2: Apply area formula

Substitute $s = 9$ into $A=s^{2}$, so $A = 9^{2}=81$ square feet.

Answer:

D. 81 square feet