Question

On a scale drawing of Caleb's house, the four bedroom walls each measure 10 inches wide by 6 inches tall. The scale of the drawing is 1 inch = 1.5 feet. Caleb will paint all four walls. If a gallon of paint covers 250 square feet, how many gallons of paint will Caleb need?

Answer 1

Approximately 2 gallons of paint are required to paint four bedroom walls

Explanation:

Dimensions of the four bedroom walls = 10 inches wide by 6 inches tall

As 1 inch = 1.5 feet,

10 inches
`=10(1.5)=15` feets

6 inches
`=6(1.5)=9` feets

Dimensions of the four bedroom walls = 15 feets wide by 9 feets tall

Area of one wall = product of the dimensions
`=15(9)=135` square feets

Area of four walls =
`4(135)=540` square feets

Area of four walls covered by a gallon of paint = 250 square feets

So,

Amount of paint required =
`(540)/(250)=2.16`

That is approximately 2 gallons of paint are required to paint four bedroom walls