A gallery is using glass display cases to display artifacts. They need to cover each display case with a sheet of clear protecti

Question

3 years ago

15

A gallery is using glass display cases to display artifacts. They need to cover each display case with a sheet of clear protecti

ve film to protect the glass on every side. This net represents a single display case.
How much film is needed to cover each display case?

Enter your answer in the box.

in²

Mathematics

2 answers:

marusya05 [52] · Answer 1 · 2022-10-24T21:40:22+03:00

The amount of film that needs to cover the display case is its surface area

2420 square inches of film is needed to cover each display case

<h3>How to determine the amount of film needed</h3>

The dimension of the case is given as:

26 in by 15 in by 20 in

Start by calculating the surface area of the case using:

$A = 2 *(lw + wh + lh)$

So, we have:

$A = 2 *(26 * 15 + 26 * 20 + 15 * 20)$

Evaluate the product

$A = 2420$

Hence, 2420 square inches of film is needed to cover each display case