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
7.50 per m
Answers
Answered by
2
Answer:
volume of cuboid=l×b×h
=5×4×3
=60m³
==============60×7.50
================45000
Answered by
10
length=5m
breadth =4m
height=3m
curved surface area of room =2(l+b)h
=2×(5+4)×3
=2×9×3
=54 square cm
area of ceiling=l×b
=5×4=20 square cm
cost of white washing of 4walls and ceiling=area of ceiling + CSA of walls×
=54+20=74×7.50
=$555
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