Question

Find the area of a circle with radius 4 ft.Use the value 3.14 for it, and do not round your answer.Be sure to include the correct unit in your answer.

Answer 1

Step 1

Write an expression for the area of a circle

$The\text{ ar}eaofacircle(A)=\pi r^2$

Where π = 3.14

r = radius = 4ft

Step 2

Substitute in the values and find the area of the circle.

$\begin{gathered} A\text{ = }3.14\text{ }\times4^2 \\ A=50.24ft^2 \end{gathered}$

Hence the area of the circle = 50.24ft²