Friday

July 25, 2014

July 25, 2014

Posted by **-Minx-** on Wednesday, August 17, 2011 at 10:28pm.

a.side is increasing when the side is 4 cm

b.surface area is increasing when the side is 4cm

V= x^3 A= 6x^2

- math -
**Reiny**, Wednesday, August 17, 2011 at 10:59pmdV/dt = 3x^2 dx/dt

96 = 3(4^2)dx/dt

dx/dt = 96/48 = 2 cm/second

A = 6x^2

dA/dt = 12x dx/dt

dA/dt = 12(4)(2) = 96 cm^2/sec

- math -
**-Minx-**, Wednesday, August 17, 2011 at 11:06pmA spherical balloon is being inflated and its radius is changing at the rate of 2m/minute. When the radius is 4m, find the rate at which the:

(a).volume is increasing

V= 3/4 pie r^2

(b). surface area is increasing

A = 4 pie r^2

**Related Questions**

calculus - the edge of a cube is increasing at the rate of .05 centimeters per ...

math - side of the cube increasing at rate of 6 cm/s. find the rate of increase ...

calculus - the side of a cube is expanding at a constant rate of 2 centimeters ...

Calculus - The side of a square box is increasing at a rate of 4mm/s and its ...

math - The edge of a cube is increasing at a rate of .05 cm/s. In terms of the ...

college calculus - 1) each side of a square is increasing at a rate of 6cm/s. At...

calculus - the side of squyare,s, is increasing at a rate of k unites per second...

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

calculus - the edges of a cube are increasing at the rate of 5 in/min. How fast ...

calculus: related rates - hello, please help me. A cylindrical can is being ...