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olasank [31]
3 years ago
5

The radius of a sphere is increasing at a rate of 5 mm/s. how fast is the volume increasing when the diameter is 60 mm? evaluate

your answer numerically. (round the answer to the nearest whole number.)
Mathematics
1 answer:
mamaluj [8]3 years ago
4 0
The diameter of the sphere is 60 mm which means its radius is 30mm. <span>The radius of a sphere is increasing at a rate of 5 mm/s. 
The formula for the radius when the time is x second would be:
</span>r(t)<span>= 30+ 5x
dr/dt= 5

The speed of </span><span>volume increase </span><span>of the sphere volume would be derived from sphere volume: 
</span>V(r)=4/3* pi * r^3<span>
dV/dt= 4/3 * pi * 3r^2 * (dr/dt) =4/3* pi * 3(30)^2 * 5 =  18000 pi= 56571 mm^3/s</span>
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