Find the time at which the snowball to melt completely.
It takes more hours to lose the other half of the volume.
The volume of snowball decreases at a rate proportional to its surface area and takes three hours to decrease to half its original volume.
From the given statement, the rate of change of the volume is proportional to the surface area.
, where is a constant.
Use formula of sphere.
Hence it takes more hours to lose the other half of the volume.
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