both ends of a hollow cylinder are open. Its height is 20 cm and internal and
external cadius are 26 cm and 30 cm respectively. Find the volume of this hollow
cylinder. diameter
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Answer:
given: h = 20 cm, R = 30 cm , r = 26 cm
to find the volume of cylinder
formula used : V = πh [ R² - r²]
=> V = 22/7*20 [ 30² - 26² ]
=> V = 22/7*20 [ 900 - 676 ]
=> V = 22/7*20 [ 224 ]
=> V = 14,080 cm³
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