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CBSE Class 9 Answered

the total surface area of hollow metal cylinder open at both ends of a internal radius 8cm and height 10cm is 388πcm²(ignoring the area of rims ).find the thickness of the metal in the cylinder
Asked by titub5397 | 18 Dec, 2023, 09:05: AM
answered-by-expert Expert Answer

Let R be the total radius and r be the inner radius of the cylinder.

Total surface area = Outer surface area + Inner surface area + 2(area of thickness)

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Answered by Renu Varma | 18 Dec, 2023, 09:33: AM

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CBSE 9 - Maths
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