The length, breadth and height of a room are 5 m, 4m, and 3 m respectively. Find the cost of white wha washing the inner of the room and ceiling at the rate of $50 per square metre?
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Step-by-step explanation:
Length, breadth and height of a room are 5 m, 4 m and 3 m.
Area of four walls of the room =2h(l+b)
=2×3(5+4)
=6(9)
=54 sq m
Area of the ceiling =l×b
=5×4
=20 sq cm.
Total area of the four walls and the ceiling of the room
=54+20
=74 sq cm
Cost of white washing = Rs 50 per sq m
Total cost of white washing =74×50= Rs 3700
Answered by
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Answer:
given that the length,
breadth and height of a room are 5 m, 4 m
and 3 m respectively.
We have found that the area of whitewashing is 74 m² the total cost of whitewashing the walls of the room and the ceiling is ₹555.
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