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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?

 Feb 5, 2020
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Total  square footage to be painted  =

 

Ceiling  =  20 * 30  =   600 sq ft

 

Walls   10 ( 20 + 20 + 30 + 30)  =  10 (100)  =  1000 sq ft

 

Total area  covered by 2 coats of paint  = 2  ( 600 + 1000)  = 2 (1600) =  3200 sq ft

 

Total cost  =

 

3200 / 400  * 53   =

 

8 * 53  = 

 

$424

 

 

cool cool cool

 Feb 5, 2020

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