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Each gallon of paint covers 200 square feet. I have to paint one side of a wall that is 12 meters tall and 80 meters long. If a foot is approximately 0.3048 meters, then what is the smallest whole number of gallons I can buy and have enough paint to cover the whole wall?

Thx

Mar 15, 2021

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Mar 15, 2021
edited by Guest  Mar 15, 2021
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The wall is 12*80 = 960 m^2.  This converts to 960/0.3048 = 3150 square feet, so the number of gallons needed is 3150/200 = 15.74, which rounds up to 16.

Mar 15, 2021
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16 is wrong

Mar 15, 2021
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The total surface area to paint  =  12 m  *  80 m   =   960 square meters

1 ft   ≈   0.3048 m

1 ft2  ≈   0.09290304 m2

200 ft2   ≈   18.580608 m2

And so one gallon of paint covers about  18.581  square meters.

960 m2  /  ( 18.581 m2 per gallon)  ≈   51.67 gallons

So  51  gallons would not be enough... it would take  52  gallons of paint to cover the wall.

(Note to previous answerer:  960 m2  ≈  10333.354 ft2   ≉  3150 ft2)

.

Mar 15, 2021