Surface Area of a Cube is .
If the volume of a cube is increasing at and the surface area of the cube is increasing at
, what is the length of each edge of the cube?
A. 2
B
C.
D. 4
E. 8
Answers are in inches.
This is what I know:
Dv/dt= 24
and DSA/dt= 12
SA= 3s...I think
So,
Dv/dt= 3s ds/dt
dSA/dt= 2 ds/dt
Ds/dt=
Now what?
Thanks!