Question

A box is designed to hold pencils. The front of the box will be made from a clear material for display. The rest of the box will be made from cardboard.

A prism has a length of 20 centimeters, height of 5 centimeters, and width of 4 centimeters.


What is the surface area of the side with the clear material?

Answer 1

D. 100

Explanation:

20x5=100

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Answer 2

area of a rectangle/front side of the box = 100 cm²

Explanation:

The prism box is a rectangular prism and the front side of the box will be made of the clear material. The other sides will be made of cardboard paper. The surface area of the side with clear material is only the area of the front side of the box. The area of only the front side is the area of 1 rectangle.

The box has a length of 20 cm , height of 5 cm and a width of 4 cm. The surface area of only the front side of the box which is the area of one rectangle only deals with the height and the length.

area of a rectangle/front side = length × height

where

length = 20 cm

height = 5 cm

area of a rectangle/front side = 20 × 5

area of a rectangle/front side = 100 cm²