v = 4/3 pi r^3
dv/dt = 4 pi r^2 dr/dt
now just plug in your numbers ...
If the radius of a sphere is increasing at a constant rate of 4 cm/sec, then the volume is increasing at a rate of ???? cm^3/sec when the radius is 5 cm.
3 answers
I got 264586.8
by calculating
268.08x 986.96
where did I go wrong?
Thanks steve
by calculating
268.08x 986.96
where did I go wrong?
Thanks steve
where ever did you get those numbers?
4 pi r^2 dr/dt
= 4 * pi * 5^2 * 4
= 400 pi cm^3/s
4 pi r^2 dr/dt
= 4 * pi * 5^2 * 4
= 400 pi cm^3/s