Question

find the surface area or volume of e of paper. 1. 5 ft. 16 ft. 8 ft. sa = ____________

Explanation:

Step1: Recall surface - area formula for rectangular prism

The formula for the surface area of a rectangular prism is $SA = 2(lw+lh + wh)$, where $l$ is the length, $w$ is the width, and $h$ is the height. Here, $l = 16$ ft, $w = 8$ ft, and $h = 5$ ft.

Step2: Calculate $lw$

$lw=16\times8 = 128$ square - feet.

Step3: Calculate $lh$

$lh = 16\times5=80$ square - feet.

Step4: Calculate $wh$

$wh = 8\times5 = 40$ square - feet.

Step5: Substitute into the formula

$SA=2(128 + 80+40)$.
First, add the values inside the parentheses: $128+80 + 40=248$.
Then, multiply by 2: $SA = 2\times248=496$ square - feet.

Answer:

496 square feet