A cylindrical pillar is 100cm in diameter and 2.5m in height.find the cost of painting curved surface area of pillar at rate of rupees 12.50permsquare
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The diameter of the cylinder is 100 cm = 1 m
it's radius is = 0.5 m
The height of the cylinder is = 2.5 m
So it's CSA is = 2πrh
= 2×3.14×0.5×2.5 m²
= 2×314/100×5/10×25/10
= 7.85 m²
And the cost of painting is = (12.5)(7.85)
98.125 Rs/-
Hope this helps you
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Answer:
Step-by-step explanation:
The diameter of the cylinder is 100 cm = 1 m
it's radius is = 0.5 m
The height of the cylinder is = 2.5 m
So it's CSA is = 2πrh
= 2×3.14×0.5×2.5 m²
= 2×314/100×5/10×25/10
= 7.85 m²
And the cost of painting is = (12.5)(7.85)
98.125 Rs/-
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