Answer:
(2/3)πR^3
R=4-3=1
Say π=3.14
(2/3)3.14(1)^3
=2.09 in^3
V = a x h x 1/3
V = 3.14(1) x 3 x 1/3
V=3.14 in^3
Total: 2.09 + 3.14 =5.23 in^3
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