1. 12.4 Volume of Prisms and Cylinders

6. V = πr 2 h 1253 = πr 2 (10) r 2 = 39.88

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8. V = πr 2 h V = π(5) 2 (8) V = 628.32 in 3

9. Large Cylinder V = π(3) 2 (7) V = 197.92 mm 3 Small Cylinder V = π(1) 2 (7) V = 21.99 mm 3 197.92 – 21.99 = 175.93 mm 3

10. V = l x w x h V = 11 x 4 x 5 V = 220 m 3 V = π(6) 2 (9) V = 1017.87 ft 3

11. 200π = πr 2 (8) r 2 = 25  r = 5  d = 1ocm Sin 60 = h/18 h = 15.59 V = π(6) 2 (15.59)  V = 4x4x4 = 64in  V = ½ π(2) 2 (4) = 25.13in 3

12. Assignment Practice 12.4