Question

The following circle is not drawn to scale. Find the area of the circle. (Use 22/7 as an approximation for .)81What is the area of the circle? Round to one decimal place.Do not include units, ft?, in your answer.

Answer 1

The area of a circle (A) is computed as follows:

`A=\pi\cdot(D^2)/(4)`

where D is the diameter of the circle.

From the picture, D = 81 ft. Using 22/7 as an approximation of π, we get:

`\begin{gathered} A=(22)/(7)\cdot(81^2)/(4) \\ A=(22\cdot6561)/(28) \\ A=5155.1ft^2 \end{gathered}`