Question

all edges of a cube are expanding at a rate of 3 centimeters per second. How fast is the volume changing when each edge is 5 centimeters

Answer 1

can anybody help

Answer 2

dl/dt=3, v=l^3, dv/dt=3l^2*dl/dt=l^2
dv/dt=25

Answer 3

Did you understood what I did there?

Answer 4

no wats da answer

Answer 5

Ok, do you know derivatives?