I have to paint one side of a wall. The wall is 12 meters tall and 120 meters long. Each gallon of paint covers 150 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?
First, let's convert every single measurement into feet from meters so we don't have to worry about it later.
We have 12m0.3048m/ft=39.3701ft for the height
And we have 120m0.3048m/ft=393.7007ft for the length.
Now, we can find the total area of the wall. We do length times height, so we have
(39.3701ft)(393.7007ft)=15,500.0359ft2
Now, we do some ugly math. We must divide by the gallons.
Since each gallon of paint covers 150, we must do
15,500.0359sqft150sqft/gallon=103.3335gallons
Since you can't actually by a fraction of a gallon, we must round up.
So, we simply have
104 gallons as our answer.
So 104 is our answer.
Thanks! :)