What is the formula oftotal surface area of a hollow cylinder?
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The formula is 2π(r + R) (h + R - r).
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Total surface area of a hollow right circular
cylinder =2.pi.(r2+r1)(h+r2 -r1 ).unit^2
Where r1 is radius of inner hollow cylinder.
r2 is the radius of outer cylinder.
h is the height of cylinder
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