Question

the figure shows a net of a rectangular prism. which expression can be used to find the surface area of the prism? 2(20 8)+2(20 3)+2(8 * 3). what is the surface area of the prism? s.a. = cm²

Explanation:

Step1: Recall surface - area formula

The surface area of a rectangular prism $S.A.=2(lw + lh+wh)$, where $l = 20$ cm, $w = 8$ cm, and $h = 3$ cm.

Step2: Calculate each product

$2(lw)=2(20\times8)=320$, $2(lh)=2(20\times3)=120$, $2(wh)=2(8\times3)=48$.

Step3: Sum up the results

$S.A.=320 + 120+48=488$.

Answer:

$488$