Question

Work out the surface area of this solid prism.

9m
5m
3m
4m
The diagram is not drawn to scale.
Unit is metres squared aswell.

Answer 1

Check the picture below.

so let's simply get the area of each of those six rectangles and sum them up.

`\stackrel{\textit{\large Areas}}{\stackrel{\textit{left and right}}{2(2\cdot 4)}+\stackrel{\textit{front and back}}{2(5\cdot 2)}+\stackrel{\textit{top and bottom}}{2(5\cdot 4)}}\implies 16+20+40\implies 76`