Question

The diameter of a circle is 12 feet. what is the area?give the exact answer in simplest form.

Answer 1

The area of a circle (A) with radius "r" is:

`A=\pi\cdot r^2`

To solve this question, follow the steps below.

Step 01: Find r.

The radius is half the measure of the diameter.

`r=(D)/(2)`

Given D = 12 feet, then:

`\begin{gathered} r=(12)/(2) \\ r=6 \end{gathered}`

Step 02: Find A.

Use r = 6 feet to find A.

`\begin{gathered} A=\pi\cdot6^2 \\ A=36\pi \end{gathered}`

Answer: The area is 36π square feet.