Molly needs 384 quarts of paint.
Explanation:
Given,
The height(h) of the wall = 8 ft
Length(l) = 12 ft
To find the amount of paint is needed we need to find the area of the wall first.
Formula
Area of the wall = h×l
Now,
Area of the wall = 12×8 sq ft = 96 sq ft
Now,
To paint 1 sq ft 4 quarts of paint is needed.
To paint 96 sq ft the amount of paint will be = 96×4 quart
= 384 quarts
So,
Molly needs 384 quarts of paint.