Answer:
3
Explanation:
Since the wall is two different lengths, it assumes the wall is a rectangle
Angle of a rectangle is L x W
Which means 10x13 = 130
Since every gallon covers 60 square feet, we need to divide that 130 by 60
(130)/(60) = 2.2
Since they dont sell partial gallons, she would have to buy 3 gallons of paint