Question

Work out the surface area of a cubiod 2cm by 5cm by 3cm

Answer 1

so we know is a cuboid, namely like the one in the picture below, however all sides are not equal, the one in the picture is a cube, this is a cuboid or just a rectangular prism, so the side lengths differ.

we know the sides are length = 2, width = 5, height = 3.

`\bf \textit{surface area of a rectangular prism}\\\\ SA=2(Lw+Lh+wh)~~ \begin{cases} L=length\\ w=width\\ h=height\\[-0.5em] \hrulefill\\ L=2\\ w=5\\ h=3 \end{cases}\implies SA=2(10+6+15) \\\\\\ SA=2(31)\implies SA=62`