Chapter 10.9, Problem 12PSB

To determine

To find : The Perimeter of the given figure.

Answer to Problem 12PSB

  $40.82$ unit

Explanation of Solution

Given information :

  

We know that there are two circles accordingly

( $r_1$ ) radius = $2$ and ( $r_2$ ) = radius = $4.5$

Formula Used:

Circumference of circle = $2\pi r$

Calculation :

Perimeter of figure = Perimeter of $a$ + Perimeter of $b$ + Perimeter of $c$ + Perimeter of $d$

  $\begin{array}{l}=\frac{1}{2}\times 2\pi r_1+\frac{1}{2}\times 2\pi r_2+\frac{1}{2}\times 2\pi r_1+\frac{1}{2}\times 2\pi r_2\\ =6.28+14.13+6.28+14.13\\ =40.82\text{ units}\end{array}$