1.

The slant height of a cone is fixed at 7cm. The rate of increase in the volume of the cone corresponding to the rate of increases of 0.3 cm/s in the hieght when h = 4cm is

Answer»

`(PI)/(10)` C c/s
`(3PI)/(10)` c c/s
`(pi)/(5)` c c/s
`(7pi)/(10)` c c/s

Answer :A


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