surface area formul of hollow cylinder
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hey here's your answer
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total surface area of a hollow cylinder is 2π ( r1 + r2 )( r2 - r1 +h), where, r1 is inner radius, r2 is outer radius and h is height.
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total surface area of a hollow cylinder is 2π ( r1 + r2 )( r2 - r1 +h), where, r1 is inner radius, r2 is outer radius and h is height.
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2 pi h (R+r) - curved surface area.
2 pi (R+r)(R-r+h) - total surface area.
Hope this helps you....
2 pi (R+r)(R-r+h) - total surface area.
Hope this helps you....
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