Question

1. which expression represents the total surface area of the prism shown?

2(5·7)+2(5·10)+2(7·10)
find the surface area of the prism.
s.a. = in.²

Explanation:

Step1: Calculate each product

$$\begin{align*} 2(5\times7)&=2\times35 = 70\\ 2(5\times10)&=2\times50=100\\ 2(7\times10)&=2\times70 = 140 \end{align*}$$

Step2: Sum up the results

$$70 + 100+140=310$$

Answer:

$310$