The area of blot of link is growing such that after t seconds, its area is given by A `=(3t^(2)+7)
Channel: Doubtnut
Date: 2020-01-28

The area of blot of link is growing such that after t seconds, its area is given by A `=(3t^(2)+7) cm^(2)`. Calculate the rate of increases of area at t=5 second.