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I have to paint one side of a wall.  The wall is $15$ meters tall and $60$ meters long.  Each gallon of paint covers $400$ square feet. 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?

 Aug 15, 2025
 #1
avatar+142 
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The answer is 5.  I hope this helps!

 Aug 15, 2025
 #2
avatar+67 
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wall total area:15*60=900\(m^2\)

a foot=0.3048 meters

each gallon of paint => 400 sqft,

let's convert \(900m^2\)to feet first

Since 1 foot=0.3048 meters, 1 sqft =\(0.3048^2 \) square meters

which is about 0.09290304 square meters,

\(900m^2\)is about 9687.52

9687.52/400=24.2188 but we go to the next number since we need the smallest whole number of gallons:

25

smiley

 

 
 Aug 18, 2025
edited by bqimath  Aug 18, 2025

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