The cost of painting the outer curved surface of a cylinder at ₹ 1.50 per cm2 is ₹ 660. If the height of the cylinder is 2 m. Then, find the curved surface of the base of cylinder.
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The cost of painting the outer curved surface of a cylinder at ₹ 1.50 per cm2 is ₹ 660. If the height of the cylinder is 2 m. Then, find the curved surface of the base of cylinder.
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Answer:
38.5cm^2
Step-by-step explanation:
CSA=660/1.50=440cm^2
CSA=2πrh=440
therefore,
22/7rh=440/2
r×20=220×7/22. (h=20)
r=10×7/20
r=7/2
area of base= πr×r=22/7×7/2×7/2=77/2=38.5cm^2
Step-by-step explanation:
I hope it's help UH..........o_0