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san4es73 [151]
3 years ago
10

You are painting the walls and ceiling of a rectangular 20 x 30 ft room. The walls are 10 feet tall. You need two coats of paint

. If a gallon of paint covers 400 square feet and cost $53 per gallon, how much will you spend on painting this room?
Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
6 0

Answer:

The cost for painting will be $212.

Step-by-step explanation:

I am painting the walls and ceiling of a rectangular 20 x 30 ft room. The walls are 10 feet tall.

So, the total area to be painted = {2 × (20 + 30) × 10} + (20 × 30) = 1600 sq. ft.

Now, a gallon of paint covers 400 square feet and cost $53 per gallon.

So, the number of gallons of paint required will be \frac{1600}{400} = 4 gallons.

And the cost for painting will be $(4 × 53) = $212. (Answer)

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