[tex]1.\\ V=\frac{1}{3}\pi r^2H\\\\r=12cm;\ H=8cm\\\\substitute\ to\ V:\\\\V=\frac{1}{3}\pi\cdot12^2\cdot8=\frac{1}{3}\pi\cdot144\cdot8=\pi\cdot48\cdot8=384\pi\ (cm^3)\\\\384\pi\ cm^3\approx384\cdot3.14\ cm^3=1205.76\ cm^3\approx1206\ cm^3\\\\Answer:A [/tex]
[tex]2.\\A_b=150\ ft^2\\\\H=8\ ft\\\\V=A_b\cdot H\\\\V=150\cdot8=1200\ (ft^3)\\\\\\Answer:A[/tex]
