If the curved surface of a right circular cylinder is 1760cm2 and its radius is 21 cm, then its height is 803cm.
A
True
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B
False
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C
Data insufficient
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D
Ambiguous
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Solution
The correct option is B False Formula for curved surface of a cylinder =2πrh given radius =21cm 2(π)rh=1760 2×227×21×h=1760 2×22×3×h=1760 h=176044×3 h=403cm Hence the given statement is false.