Chapter 12.2, Problem 21IP

To determine

To find : The area of the cross section.

Answer to Problem 21IP

  $\text{838}\text{.37}{\text{(feet)}}^{\text{2}}$

Explanation of Solution

Given information :

The given information is, Circumference of Tree = $102.6$ feet

Formula Used:

Area of circle = $\pi r^2$

Calculation :

Circumference of tree = $102.6$ feet

  $\begin{array}{l}2\pi r=102.6\text{feet}\\ r=\frac{102.6}{2\times 3.14}\text{feet}\\ r=16.34\text{feet}\end{array}$

Area of cross section = $\pi r^2$

  $\begin{array}{}$ =(3.14){(16.34)}^2$$ =838.37{(\text{feet})}^2$\end{array}$