Question

surface area review for the rectangular prism

Explanation:

Step1: Recall surface - area formula

The surface - area formula for a rectangular prism is $SA = 2(lw+lh + wh)$, where $l$ is the length, $w$ is the width, and $h$ is the height. Here, $l = 10$ m, $w = 4$ m, and $h = 8$ m.

Step2: Calculate $lw$, $lh$, and $wh$

$lw=10\times4 = 40$ m², $lh = 10\times8=80$ m², $wh=4\times8 = 32$ m².

Step3: Calculate the sum inside the parentheses

$lw+lh + wh=40 + 80+32=152$ m².

Step4: Multiply by 2

$SA = 2\times152=304$ m².

Answer:

$304$ m²