Question

Find the area of the circleA) 56.52 in^2B) 1,017.36 in^2C) 254.34 in^2D) 28.26 in^2

Answer 1

The area of the circle can be found through the formula:

`\begin{gathered} A=\pi\ast r^2 \\ remember,\text{ } \\ r=(D)/(2) \end{gathered}`

since the diameter is given, find the radius,

`\begin{gathered} r=(18in)/(2) \\ r=9in \end{gathered}`

apply the formula of the area using the approximation for π as 3.14,

`\begin{gathered} A=\pi\ast(9in)^2 \\ A=3.14\ast81in^2 \\ A\approx254.34in^2 \end{gathered}`

Answer:

The area of the circle is approximately 254.34 in²