Question

can you help me on this? ( if I leave then I must've disconnected so please don't find me rude it keeps disconnecting)?

Answer 1

Part A:

There are 3 pairs of rectangles in this rectangular prism

Part B:

The surface area of a rectangular prism is given by:

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