SOLUTION: find the cost of painting the four walls of a room 10 meters long, 5 meters broad and 6 meters high at the cost of rs 4 per square metere

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Question 821743: find the cost of painting the four walls of a room 10 meters long, 5 meters broad and 6 meters high at the cost of rs 4 per square metere
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
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NOTE TO STUDENT:
calculate the surface area of the four walls
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two long walls: 10*6 sq.m
two short walls: 5*6 sq.m
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a = 2(10*6) + 2(5*6) sq.m
a = 180 sq.m
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cost = (area units a) * (cost per area unit r)
c = a*r
c = 180*4
c = 720 rupee
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