math

Teresa wants to paint the ceiling of her restaurant. The ceiling is in the shape of a square. Its side lengths are feet 55. Suppose each can of paint will cover 275 square feet. How many cans will she need to paint the ceiling?     

Area of ceiling          A_ceiling   =  55 ft • 55 ft  =  3025 ft²     

Cans needed            C_needed  =  3025 ft² / 275 cans/ft²     

                                  C_needed  =  11 cans needed     

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