Question
If the volume of a right circular cylinder with is height equal to the radius is `25 1/7 cm^3`, then the radius of the cylinder is equal to :
Answer: Option B
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Let the radius and height be r cm each
Then, `22/7 xx r^2 xx r = 176/7`
`rArr r^3 = ( 176/7 xx 7/22)`
`rArr r^3 = 8` `rArr r = 2`
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