Find the volume of the sphere. Either enter an exact answer in terms of 7 or use 3.14 for 7 and round your final answer to the nearest hundredth.
2
units 3

PLEASE HELP!

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or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!