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?

2 * [(5 * 7) + (7 * 3) + (3 * 5)]

To find the number of square inches of gift wrap needed to cover the box, we need to calculate the surface area of the box.

The surface area of a rectangular box can be found by adding the areas of all six sides. In this case, the box has three pairs of sides that are congruent (5in x 7in) and three pairs of sides that are also congruent (5in x 3in).

To calculate the surface area, we can use the formula:
Surface Area = 2 * (Length * Width + Length * Height + Width * Height)

Given:
Length = 5in
Width = 7in
Height = 3in

Substituting these values into the formula:
Surface Area = 2 * (5in * 7in + 5in * 3in + 7in * 3in)

Simplifying the equation:
Surface Area = 2 * (35in^2 + 15in^2 + 21in^2)
Surface Area = 2 * (71in^2)
Surface Area = 142in^2

Therefore, LeAnn will need 142 square inches of gift wrap to cover the box.

A clerk was asked to change a $10 bill. She returned 9 more dimes than nickels and twenty-one more quarters than dimes. How many coins of each did she return?

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

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