Friday

October 31, 2014

October 31, 2014

Posted by **jennifer** on Wednesday, December 29, 2010 at 4:47am.

- AP calculus AB -
**Damon**, Wednesday, December 29, 2010 at 5:12amdV/dt = 9 = surface area * dh/dt

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

but

h = 3 r

so

dh/dt = 3 dr/dt

so

9 = (pi r^2)(2 dr/dt)

but r = 3

so

9 = 9 pi (2 dr/dt

dr/dt = 1/2pi

**Answer this Question**

**Related Questions**

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

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

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 ...

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

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

math - A cone has a radius of 6 inches and a height of 9 inches a) calculate the...

MAth - An ice cream cone is 3 inches wide at the widest point, and is 6 inches ...