Question
Volume of a hemisphere is 19404 cu.cm Its radius is :
Answer: Option C
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Let the radius be R cm. Then ,
`2/3 xx 22/7 xx R^3 = 19404`
`hArr R^3 = (19404 xx 21/44)`
`hArr R^3 = (21)^3`
`hArr R = 21 cm.`
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