Wednesday

September 17, 2014

September 17, 2014

Posted by **joseph** on Thursday, December 30, 2010 at 3:33pm.

- calculus -
**Marth**, Thursday, December 30, 2010 at 3:52pmFor a cone, V = (1/3)(pi)(r^2)(h).

But h=3r, so V = (pi)r^3.

Differentiate with respect to time.

dV/dt = (3pi)(r^2)(dr/dt)

dr/dt = (3pi)(r^2)/(dV/dt)

**Answer this Question**

**Related Questions**

calculus help please - At the instant when the radius of a cone is 3 inches, the...

AP calculus AB - At the instant when the radius of a cone is 3 inches, the ...

math - Resolved QuestionShow me another » AP Calculus related rates problem? The...

calculus - The radius of a cone increases at the rate of 0.3 inches per minute, ...

Algebra - The volume of a cone is 54 pi cubic inches. The radius and height of ...

geometry - The volume of a cone is 54 pi cubic inches. The radius and height of ...

Calculus AB - The volume V or a cone (V = 1/3 π rČ h) is increasing at a ...

algebra - volume of cone varies jointly as square of its radius and its height ...

Calculus - The edge of a cube is increasing at a rate of 2 inches per minute. ...

Calculus - At a certain instant, each edge of a cube is 5 inches long and the ...