Chapter 12.9, Problem 1GP

To determine

To find : Lateral and surface area of cylinder.

Answer to Problem 1GP

Lateral surface area = $1491.5{\text{ mm}}^{\text{2}}$ and Surface Area = $2058.27{\text{mm}}^{\text{2}}$

Explanation of Solution

Given information :

The given information is,

Diameter = $19$ mm and height ( $h$ ) = $25$ mm

  

Formula Used:

Lateral Surface Area = $2\pi rh$

Total Surface Area = $2\pi rh+2\pi r^2$

Calculation :

Total Surface Area = $2\times 3.14\times \frac{19}{2}\times 25=1491.5{\text{ mm}}^{\text{2}}$

Surface Area = $1491.5+2\times 3.14\times {\left(\frac{19}{2}\right)}^2$

  $\begin{array}{l}=1491.5+566.77\\ =2058.27{\text{ mm}}^{\text{2}}\end{array}$