A cylindrical pillar is 25 cm in radius and 3.5 m in height. find the curved surface area of the pillar..
plz solve..
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A cylindrical pillar is 25 cm in radius and 3.5 m in height. find the curved surface area of the pillar..
plz solve..
don't spam...plz.❌❌❌❌❌❌❌⚡
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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
Answer:
LSA of cylinder = 2×pie×r×h
= 2×22/7×0.25×3.5
= 5.5m²
Step-by-step explanation:
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