Problema Solution
jared wants to paint his room. the dimensions of the room are 12 feet by 15 feet and the walls are 9 feet tall. there are two windows, each with dimensions 6 feet by 5 feet. there are tow doors, each with dimensions 30 inches by 6 feet, if a gallon of paint covers about 350 square feet, how many gallons of paint will he need to put two coats of paint on the wall?
Answer provided by our tutors
1 ft = 12 in
1 in = (1/12) ft
30 in = (30/12) ft
30 in = 5/6 ft
The area of the surface that Jared needs to paint is:
2(12*9 + 15*9) - 2(5*6 + (5/6)*6) = 416 ft^2
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He will put 2 coats so he will need pain for 2*416 = 832 ft^2
Let 'x' represent the gallons of paint that Jared needs:
350x = 832
x = 832/350
x = 2.38 gal
Jared will need 2.38 gallons of paint.