Asked by Borhan
each side of a cube is increasing at the rate of 9 cm/s.When the length of each side is 5 cm , find the rate of increase of its volume and total surface area.
Answers
Answered by
Steve
v = s^3
dv/dt = 3s^2 ds/dt
a = 6s^2
da/dt = 12s ds/dt
You have s and ds/dt, so plug 'em in
dv/dt = 3s^2 ds/dt
a = 6s^2
da/dt = 12s ds/dt
You have s and ds/dt, so plug 'em in
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