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Angeliki · Answer 1 · 2023-04-25T05:51:58+0000

Part A:

There are 3 pairs of rectangles in this rectangular prism

Part B:

The surface area of a rectangular prism is given by:

$\begin{gathered} SA=2(lw+lh+wh) \\ where\colon \\ w=width=7\operatorname{cm} \\ l=length=4\operatorname{cm} \\ h=height=10\operatorname{cm} \\ so\colon \\ SA=2(7\cdot4+4\cdot10+7\cdot10) \\ SA=2(28+40+70) \\ SA=2(138) \\ SA=276cm^2 \end{gathered}$

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