CBSE Class 12-science Answered
Let V be the volume of the Water at time 't'.
Then, where 'r' and 'h' are the radius and height respectively. From the figure it is clear
Therefore the volume is
Differentiating with respect to t we get
Now we are given
When the slant height is 4cm
Slant height is decreasing at the rate of
Yes, leaking of water leads to wastage of water. We must do everything possible to save our natural resources.