a cylindrical pillar is 1 metre in diameter and 4.2 metre in height find the cost of white washing the curved surface of the pillar at the rate Rupees 15 per metre square
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Answer:
Curved surface of cylinder = 2πrh
Diameter is 1 metre
Radius is 1/2 metre
Height is 4.2m
CSA of cylinder = 2×22/7×1/2×4.2
= 13.2
Cost of white washing of the pillar = CSA of cylinder × 15 per meter square
= 13.2 × 15
= 198rs
Answered by
0
Answer:
r=0.5
h=4.2
csa=2×22/7×r×h
=2×22/7×0.5×4.2
=13.2
total cost=15× csa
=198
Step-by-step explanation:
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