If both ends of a hollow cylinder are open, its height is 20 cm and its internal and external diameters are 26cm and 30cm respectively. Find the volume of a hollow cylinder.

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Solution

Volume V= $π (r_{2}^{2} - r_{1}^{2}) h$
V = $π (15^{2} - 13^{2}) \times 20$ = $3518.583 c m^{2} o r 1120 π$

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If both ends of a hollow cylinder are open, its height is 20 cm and its internal and external diameters are 26cm and 30cm respectively. Find the volume of a hollow cylinder.

Volume V= π(r22−r21)hV = π(152−132)×20 = 3518.583cm2or1120π

Volume V= $π (r_{2}^{2} - r_{1}^{2}) h$
V = $π (15^{2} - 13^{2}) \times 20$ = $3518.583 c m^{2} o r 1120 π$