The Length, breadth & height of a room are 5 metre 4 metre and 3 metre respectively. find the cost of whitewashing the walls of the room and the selling at the rate of ₹7.50 metre square
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6
Given-
L=5m
B=4m
H=3m
Whitewashing=Lateral Surface Area of cuboid=2h(l+b)
=2×3(5+4)
=6×9
=54m^2
Now,
Rate of whitewashing = ₹7.50/m^2
Cost of whitewashing= 54×7.50
= ₹405
Therefore, cost of whitewashing the four walls is ₹405.
L=5m
B=4m
H=3m
Whitewashing=Lateral Surface Area of cuboid=2h(l+b)
=2×3(5+4)
=6×9
=54m^2
Now,
Rate of whitewashing = ₹7.50/m^2
Cost of whitewashing= 54×7.50
= ₹405
Therefore, cost of whitewashing the four walls is ₹405.
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