
Andy C. answered 03/17/18
Tutor
4.9
(27)
Math/Physics Tutor
V = 4/3*pi*"R^3
= 4/3 * pi * (1/2*D)^3
= 4/3 * pi * 1/8 * D^3
= 1/6 * pi * D^3
dV/dt = 1/6 * pi * 3 * D^2 * dD/dt
= 1/2*pi * D^2 * dD/dt
10 = 1/2*pi*20^2 * dD/dt
10 = 1/2*pi*400 * dD/dt
20 = pi * 400 * dD/dt
1/20 = pi * dD/dt
1/(20*pi) = dD/dt
Janelle R.
thank you so much for your help!! :)
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03/18/18
Janelle R.
03/18/18