Sunday

March 29, 2015

March 29, 2015

Posted by **ct** on Wednesday, December 21, 2011 at 6:23am.

- math -
**Damon**, Wednesday, December 21, 2011 at 7:33amQuickly because I have to go baby sit for grand kids:

find the radius of the cone when depth = 4 feet, call it r

then

the surface area times the change in height dh = small volume change dv

so

dv = pi r^2 dh

dv/dt = (pi r^2) dh/dt

so

dh/dt = dv/dt /(pi r^2)

and dv/dt = 3 ft^2/min

**Answer this Question**

**Related Questions**

calculus inverted cone - A container in the shape of an inverted cone has ...

Calculus - A water tank is shaped like an inverted right circular cone with a ...

math - Suppose we pump water into an inverted right-circular cone tank at the ...

Math - A tank in the shape of a cone has a diameter of 8 feet and a height of 10...

Calculus - Water is leaking from the bottom of a tank in the shape of an ...

calculus - A hollow cone has height 5 feet and base diameter 4 feet. The vertex...

Math - Gravel is being dumped from a conveyor belt at a rate of 20 cubic feet ...

Calculus - A water tank has a shape of an inverted circular cone with base ...

Calculus - Gravel is being dumped from a conveyor belt at a rate of 10 cubic ...

calculus - Gravel is being dumped from a conveyor belt at a rate of 50 cubic ...