Here you go, hope I helped.
Answer:
I would go with the first one
Step-by-step explanation:
I put 4/3 x 3.14 x 6² on the calculator and it gave me 150.72 so A is the closest I'm not 100% sure but ye
Rationalise the denominator of 1/2√3
Detailed answer is in the image attached.
Hope it helps you....
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