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Mumz [18]
4 years ago
15

A gallon of latex paint can cover a 400 square foot room Maria has a rectangular room whose dimensions are 8 feet by 20 feet wit

h 7 foot ceilings how many gallons of paint does she need?
Mathematics
1 answer:
tigry1 [53]4 years ago
6 0

Answer:

The answer to your question is: 1.78 gallons

Step-by-step explanation:

Data

1 gallon = 400 ft²

room = 8 ft x 20 ft x 7 ft

Process find the area of the 6 walls of the room

Area of the floor and ceiling

                                              A = base x width

                                              A = 20 x 8

                                             A = 160 ft²  x 2

                                             A = 320 ft²

Area of the walls

                                 Area = base x width

                                 Area = 2(20 x 7) + 2(7 x 8)

                                Area = 280 + 112

                                 Area = 392 ft²

Total area = 320 + 392 = 712 ft²

                                1 gallon ------------------- 400 ft²

                                x            -------------------  712 ft²

                                x = (712 x 1)/400

                                x = 1.78 gallons

I consider that Maria will paint both the floor and the ceiling

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