Question

find the surface area of the composite figure. 10 cm 5 cm $sa_{upper}=260\\ cm^{2}$ 7 cm $sa_{lower}=332\\ cm^{2}$ $sa_{total}=?\\ cm^{2}$ 5 cm 13 cm 7 cm remember! exclude areas where complex shapes touch.

Explanation:

Step1: Recall surface - area principle

The total surface area of a composite figure is the sum of the surface areas of its non - overlapping parts.

Step2: Add given surface areas

$SA_{total}=SA_{upper}+SA_{lower}$
$SA_{total}=260 + 332$

Answer:

$592$