we need top rectangle, 2 side triangles, back rectangle and bottom rectangle
top is 5 by 25 and 1/5, the raea is 25 and 1/5 times 5=126 square feet triangles are the same but which one is the height? hmm I'm going to assume the 25ft is height so base is 25/12 ft 2 triangles so 2 times 1/2 times 25 times 25/12=625/12 square feet back 25/12 feet by 5ft or 125/12 ft²
bottom is 25 by 5ft or 125 sqaurefeet
total
126+625/12+125/12+125=627/2 squaer feet or 313.5 sqquare feet so every hundred needs 1 quart
313.5/100=3.135 round up becase you can't buy 0.135 quart (or can you?) 4 quarts
