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The height of a meeting room that's measures 19 m by 12 m is 3 m. Glen plans to apply 2 coats of paint to the walls of the room. A 4 L can of paint covers about 30m
What is the surface area of the walls to be painted? How many cans of paint will Glen need?
surface area/wall area=2(height times width)+2(height times depth)+2(width times depth)
lets say 3=height depth=19 width=12
2(3 times 12)+2(3 times 19)+2(12 times19)=2(36)+2(57)+2(228)=72+114+456=642
2 coats of paint so surface area times 2 642 times 2=1284 assuming 30m means 30 square meters we divide 1284 by 30 and get 1284/30=42 and 4/5 or 42.8 then find how many cans by dividing by 4 42.8/4=10 and 1.4/2=10.7, but you cant buy 0.7 of a can so round up and get 11 cans of paint
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