Question

What is the volume of a hemisphere with a diameter of 5.5cm, rounded to the nearest tenth of a cubic centimeter.

Answer 1

if the hemisphere has a diameter of 5.5, then its radius is half that or 2.75.

`\textit{volume of a hemisphere}\\\\ V=\cfrac{2\pi r^3}{3}~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=2.75 \end{cases}\implies V=\cfrac{2\pi (2.75)^3}{3}\implies V\approx 44~cm^3`