Question

a rectangular prism is 4 meters long, 5 meters wide, and has a height of 7 meters. What is its surface area?

Answer 1

In this problem we can calculate all the posibilities to find the surface of the figure so:

`S_A=4\cdot5\cdot2+5\cdot7\cdot2+4\cdot7\cdot2_{}`

and we solve so:

`\begin{gathered} S_A=20+70+56 \\ S_A=166 \end{gathered}`