An inverted right circular cone has a radius of 24 cm. This cone is partly filled with a viscous fluid which is dipping from the tip-hole at a constant rate of \(\frac{40}{3}\) cm3/hr. Currently, the level of oil is 10 cm from the top of the cone and has a top surface area of oil is 64π cm2. How long will it take to completely empty the cone from the viscous fluid present in it?
1
6π hr
2
5π hr
3
8π hr
4
2π hr