Answer:
1. 4 / 3 * 22 / 7 * r * r * r
2. (Z*Z*Z*Z - 1)
Hope this helps!
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Answers & Comments
Answer:
1. 4 / 3 * 22 / 7 * r * r * r
2. (Z*Z*Z*Z - 1)
Hope this helps!