43. Estimate the cost of roofing a building if the roof area is 4200 square feet.

43. Estimate the cost of roofing a building if the roof area is 4200 square feet. The shingles will cost $45 per square and the labor charge is $38 per square. (One square of shingles covers 100 square feet.)
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1 Answer

4200 ft^2=42 squares

42+38=80$/square

80*42=3360$
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