Question

find the area of a circle with diameter 12 ft. use the value 3.14 for π, and do not round your answer. be sure to include the correct unit in your answer.

Explanation:

Step1: Find the radius

The radius $r$ of a circle is half of the diameter $d$. Given $d = 12$ ft, so $r=\frac{d}{2}=\frac{12}{2}=6$ ft.

Step2: Use the area formula

The area formula of a circle is $A=\pi r^{2}$. Substitute $r = 6$ ft and $\pi=3.14$ into the formula, we get $A = 3.14\times6^{2}=3.14\times36$.

Step3: Calculate the area

$A=3.14\times36 = 113.04$ square - feet.

Answer:

$113.04$ square feet