Chapter 4.3, Problem 7PSA

To determine

To calculate: Area of circle.

Answer to Problem 7PSA

12.56 square units.

Explanation of Solution

Given information: A circle with radius 2 units.

Formula: area of circle = $\pi r^2,\pi =\mathrm{3.14.}$

Calculation: As shown in the figure, radius of the circle is $\pi =2\text{units}\text{.}$

  $\begin{array}{l}\text{using}\text{aria}\text{of}\text{circle}=\pi r^2.\\ \text{area}=3.14\times 2\times 2\\ =12.56\text{square}\text{units}\text{.}\end{array}$