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Q.

If a conical cup has a height of 21 cm and the diameter of its base is 18 cm, then the amount of water it can hold is

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a

1827

{cm}^{3}

b

1782

{cm}^{3}

c

1872

{cm}^{3}

answer is A.

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Detailed Solution

Volume of conical cup

= \frac{1}{3} π r^{2} h

$= \frac{1}{3} . \frac{22}{7} .9.9.21$

$= 1782 {cm}^{3}$

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