Chapter 12.6, Problem 12PPS

To determine

To find the surface area of the given hemisphere to the nearest tenth.

Answer to Problem 12PPS

110 mm²

Explanation of Solution

Given: A figure of a hemisphere is given as follows.

  

Radius of the hemisphere (r) = 3.4 mm

Formula used:

Surface area of a hemisphere $=3\pi r^2$

Calculation:

Surface area of given hemisphere

  $\begin{array}{l}=3\pi r^2\\ =3·\pi ·{\left(3.4\right)}^2\\ =3\times \pi \times 11.56\\ =108.9\\ \sim 110\left(\text{to nearest tenth}\right)\end{array}$

Hence, surface area of given hemisphere is 110 mm².