A cylindrical pillar is 50 cm in diameter and 3.5 m high. Find the cost of white washing its curved surface at ?
2 per square metre.[ please answer is define]
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Answered by
1
Answer:
Ok explain what you want to do
Answered by
2
Answer:
ANSWER
Given:
H=3.5 m, R=
2
50
=25 cm =
100
25
=0.25 m
⇒CSA=2πrh=(2×
7
22
×0.25×3.5) m
2
=5.5 m
2
⇒Cost of painting 1 m
2
area = Rs.12.50
⇒Cost of painting 5.5 m
2
area
= Rs.5.5×12.50
= Rs.68.75
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