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if a sphere is increasing in volume at a rate of 50pi cm^3/min how fast is the diameter changing when the volume is 4000pi/3 cm?

User Marko Jurisic
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1 Answer

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To find the rate at which the diameter of a sphere is changing when the volume is 4000π/3 cm3, you can use the formula for the volume of a sphere, which is given by the equation V = (4/3)πr3, where V is the volume, π is the constant approximately equal to 3.14, and r is the radius of the sphere.

You can rearrange this formula to solve for the radius of the sphere:

r = (3V/(4π))^(1/3)

Plugging in the known values, you get:

r = (3(4000π/3)/(4π))^(1/3)

= (4000/4)^(1/3)

= 100^(1/3)

= 10

The diameter of the sphere is twice the radius, so the diameter is 2r = 2 * 10 = 20 cm.

To find the rate at which the diameter is changing, you can use the formula for the rate of change of a function, which is given by the equation rate of change = (change in y)/(change in x). In this case, the change in y is the change in the diameter of the sphere and the change in x is the change in the volume.

Since the volume is increasing at a rate of 50π cm3/min and the diameter is changing at the same time, you can use the formula to solve for the rate of change of the diameter:

rate of change = (change in y)/(change in x)

= (change in diameter)/(50π cm3/min)

To find the change in the diameter, you would need to know the initial and final diameters of the sphere. Without this information, it is not possible to determine the rate of change of the diameter.

User Simeonwillbanks
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