Chapter 12.9, Problem 2GP

To determine

To find : Lateral and surface areal

Answer to Problem 2GP

LSA = $235.5{\text{ ft}}^{\text{2}}$ and SA = $588.75{\text{ ft}}^{\text{2}}$

Explanation of Solution

Given information :

The given information is, radius = $7\frac{1}{2}$ ft. and height = $5$ ft.

  

Formula Used:

Lateral Surface Area (LSA) = $2\pi rh$

Surface Area (SA) = $2\pi rh+2\pi r^2$

Calculation :

Lateral Surface Area (LSA) = $2\times 3.14\times \frac{15}{2}\times 5$

  $=235.5{\text{ft}}^2$

Surface Area (S.A.) = $235.5+2\times 3.14\times {\left(\frac{15}{2}\right)}^2$

  $\begin{array}{l}=235.5+353.25\\ =588.75{\text{ ft}}^{\text{2}}\end{array}$