Question

Find the area of a circle with a circumference of 18.84 units. units

Answer 1

Keyword

Area =?

Circumference = 18.84 units

To find the area of a circle, you need radius r.

First, you calculate the radius from the circumference.

`\begin{gathered} \text{Circumference = 2 }\pi\text{ r} \\ 18.84\text{ = 2 }*\text{ 3.14 }*\text{ r} \\ 18.84\text{ = 6.28r} \\ r\text{ = }(18.84)/(6.28) \\ r\text{ = }3\text{ units} \end{gathered}`

Next, find the area.

`\begin{gathered} \text{Area = }\pi r^2 \\ =\text{ 3.14 }*3^2 \\ =\text{ 3.14 }*\text{ 9} \\ =\text{ 28.26 square units} \end{gathered}`