SOLUTION: A room measures 4m by 7m and the ceiling is 3m high. A liter of paint covers 20m^2. How many liters of paint will it take to paint all but the floor of the room?

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Question 1142673: A room measures 4m by 7m and the ceiling is 3m high. A liter of paint covers 20m^2. How many liters of paint will it take to paint all but the floor of the room?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
The area of the 4 walls is:
+2%2A4%2A3+%2B+2%2A7%2A3+=+24+%2B+42+
+24+%2B+42+=+66+
The area of the ceiling is:
+4%2A7+=+28+
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The combined area is:
+66+%2B+28+=+94+ m2
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+94%2F20+=+4.7+
4.7 liters of paint are needed