The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the
cost of white washing the walls of the room and the ceiling at the rate of Rs 7.50 per m
m.
Answers
Answered by
0
Answer:
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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 7.50 per sq m
Total cost of white washing =74×7.50= Rs 555
Answered by
0
Step-by-step explanation:
Total Surface Area to be white washed
=LTA+ Area of the base
=2(l+b)h+lb=2(5+4)×3+5×4m²
=74m²
Cost of white washing =Rs.(74×7.50)=Rs.555
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