Question

Use 3.14 for the value of , and round your answers to two decimal places, where applicable.A circle has a diameter of 8 inches. What is its area?

Answer 1

The area of the circle is equal to

`A=\pi\cdot r^2`

we have

pi=3.14

D=8 in

r=D/2=8/2=4 in -----> the radius is half the diameter

substitute given values in the formula

`\begin{gathered} A=3.14\cdot4^2 \\ A=50.24 \end{gathered}`

therefore

The area is 50.24 square inches (50.24 in2)