Question

follow the steps to find the surface area of the rectangular prism. what is the area of the sides? top and bottom: 240 cm² front and back: 140 cm² sides: ? total sa:

Explanation:

Step1: Identify side - dimensions

The side - faces of a rectangular prism have dimensions of height and width. Here, the height is 7 cm and the width is 12 cm. Each side - face has an area of $7\times12$ and there are 2 side - faces.

Step2: Calculate side - face area

The area of one side - face is $A = 7\times12=84$ $cm^{2}$. The total area of the two side - faces is $2\times84 = 168$ $cm^{2}$.

Answer:

$168$ $cm^{2}$