a rectangular piece of paper22cm long and 1.5cm broad is rolled into two different ways to form two different cylinders . find their volumes.
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Step-by-step explanation:
1 - Taking length as height
Volume of cylinder = πr²h [ r = 21/88 ]
[ h = 22 ]
= π × (21/88)² × 22
= π × 441 / 7744 × 22
= 1.25 π
= 3.9 cm³
= 4cm³
2 - Taking breadth as height
Volume = πr²h [ r = 7/2 , h = 1.5
= π × (7/2)² × 1.5
= π × 49 / 4 × 15/10
= 5145/40 × π
= 129/8 × π
= 50.67 cm³
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