SOLUTION: the problem Im having difficulty with is as follows: A tumor in a persons body can be approximated by a spherical shape. Radiation treatments cause the tumor to shrink. As a resul

Question 850445: the problem Im having difficulty with is as follows:
A tumor in a persons body can be approximated by a spherical shape. Radiation treatments cause the tumor to shrink. As a result, the radius decreases at a rate of 1mm per mo.
a) if the tumor has a radius of 2.5mm, what is the surface area?
b) after two months of radiation, what is its surface area?
Thank you so much for your help!
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A tumor in a persons body can be approximated by a spherical shape. Radiation treatments cause the tumor to shrink. As a result, the radius decreases at a rate of 1mm per mo.
a) if the tumor has a radius of 2.5mm, what is the surface area?

b) after two months of radiation, what is its surface area?
> 2 months, r = 0.5 mm

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