Question

A gallon of paint will cover approximately 450 square feet. an artist wants to paint all the outside surfaces of a cube measuring 12 feet on each edge. what is the least number of gallons of paint he must buy to paint the cube

Answer 1

To find the amount of paint needed, we need to find the total surface area.

A cube has 6 surfaces.

1 surface = 12 x 12 = 144 ft²

6 surfaces = 144 x 6 = 864 ft²

Find the number of gallons of paint needed:

864 ÷ 450 = 1.92 gallons of paint

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Answer: He needs to buy 2 gallons of paint.
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Answer 2

the least number of gallons of paint he must buy to paint the cube is 2 gallons of paint.

Organizing the information given in the statement we have that:

• gallon of paint cover 450 square feet
• cube measuring 12 feet

To find the amount of paint needed, we need to find the total surface area.

$1 surface = 12 * 12 = 144 ft^2\\6 surfaces = 144 * 6 = 864 ft^2$

Find the number of gallons of paint needed:

$864 / 450 = 1.92$

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