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![\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](/tpl/images/0037/3548/5287d.png)
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Work out the surface area of a cubiod 2cm by 5cm by 3cm...
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