LeAnn wants to gift wrap a present she got for her little brother. How many square inches of gift wrap will be needed to cover a box that is 5in x 7in x 3in?

Question

asked Jan 7, 2020 23.1k views

2 Answers

Raven Cheuk · Answer 1 · 2020-01-09T18:36:02+0000

Answer:

The answer is 142 square inches.

Explanation:

Let length be = 5

Let the width be = 7

Let the height be = 3

The gift box is a 3 D box with 6 faces.

So, we get three possible combinations, and each combination is multiplied by 2 for a parallel face.

Hence, we get;

(5)(7)(2)=70 square inches

(5)(3)(2)=30 square inches

(7)(3)(2)=42 [tex] square inches</p><p>Therefore, the amount of gift wrap needed will be:</p><p>[tex]70+30+42=142 square inches.

Prashanna · Answer 2 · 2020-01-11T05:13:15+0000

A box has six sides.

Using the dimensions of the box:

2 sides are 5 x 7

2 sides are 7 x 3

2 sides are 5 x 3

Now calculate the total area:

2 x 5 x 7 = 70

2 x 7 x 3 = 42

2 x 5 x 3 = 30

Total area = 70 + 42 + 30 = 142 square inches.