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

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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}

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