Monday

October 20, 2014

October 20, 2014

Posted by **stephen** on Saturday, January 1, 2011 at 7:10pm.

- math -
**Damon**, Saturday, January 1, 2011 at 7:28pmrate of change of volume = surface area * rate of change of depth

(look at thin slice of area pi r^2 and depth delta h)

what is r?

4/10 = r/6 similar triangles

r = 12/5

surface area = pi(144/25)

so

-7 cm^3/s = pi(144/25) cm^2 * dh/dt

so

dh/dt = -(25*7)/(144 pi) cm/s

**Answer this Question**

**Related Questions**

Calculus - A leaky cylindrical oilcan has a diameter of 4 inches and a height of...

Physics - Suppose you have a very long straw that can reach from a cup of water ...

Physics - Suppose you have a very long straw that can reach from a cup of water ...

Math 2 - Cheiko bottles 4 1/8 quarts of root beer. Then she bottles another 5 7/...

Physics - The diameter of the base of a tapered drinking cup is 6.6cm . The ...

calculus ( related rates ) - a paper cup in the shape of a cone has a diameter ...

Math - A conical paper cup for holding popcorn has a radius of 3 in. and height ...

Math - A conical paper cup for holding popcorn has a radius of 3 in. and height ...

Math - 2 part question 1) a cone shaped paper cup has a height of 7 inches and a...

calculus - water is poured into a conical paper cup so that the height increases...