# A round balloon is being blown up with helium so that t seconds after starting, the radius is 2t cm. Remember that for a sphere with a radius r, V=(4/3)(pi)r^3 and SA= 4(pi)r^2. What is the equation for V'(r)?

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V=(4/3)(pi)r^3

V=(4/3)(pi)r^3

##### 1 Answer

May 11, 2018

Explanation below

#### Explanation:

Just to be clear, you used the prime notation,

So here: