I just need someone to check my answers please :)
A stone dropped into a still pond causes circular ripples on the water surface. The area of the disturbed water, t seconds after the stone hits the surface of the water is given by :
A = 4*pi*t^2 , Where the area is measured in m^2.

a) Find an expression to represent the rate of change of the area of the disturbed water.

b) Find, in terms of pi, the rate of change of the area of the disturbed water after one second.

Question

I just need someone to check my answers please :)
A stone dropped into a still pond causes circular ripples on the water surface. The area of the disturbed water, t seconds after the stone hits the surface of the water is given by :
A = 4*pi*t^2 , Where the area is measured in m^2.

a) Find an expression to represent the rate of change of the area of the disturbed water.

b) Find, in terms of pi, the rate of change of the area of the disturbed water after one second.

butterflydreamer · Answer

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