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## Lesson 11-2 Pages 563-567

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**Lesson 11-2Pages 563-567**Volume: Prisms and Cylinders**What you will learn!**• How to find volume of prisms. • How to find volume of circular cylinders.**What you really need to know!**To find the volume Vof a prism, use the formula V = Bh, where B is the area of the base, and h is the height of the solid.**What you really need to know!**The volume Vof a cylinder with radius r is the area of the base, r 2, times the height h, or V = r2h.**Example 1:**Find the volume of the prism: V = Bh B = 16 cm x 25 cm = 400 cm2 V = 400 cm2 x 8 cm V= 3,200 cm3**Example 2:**Find the volume of the triangular prism: V = Bh B = ½ x 2 in x 5 in = 5 in2 V = 5 in2 x 3 in V= 15 in3**Example 3:**Cake batter is poured into a pan that is a rectangular prism whose base is an 8 inch square. If the cake batter occupies 192 cubic inches, what will be the height of the batter? V = Bh**Example 3:**Cake batter is poured into a pan that is a rectangular prism whose base is an 8 inch square. If the cake batter occupies 192 cubic inches, what will be the height of the batter? 192 in3 = 64 in2•h**Example 3:**Cake batter is poured into a pan that is a rectangular prism whose base is an 8 inch square. If the cake batter occupies 192 cubic inches, what will be the height of the batter? 3 in = h**Example 4:**Find the volume of the solid.**Example 5:**Find the volume of the cylinder. Round to the nearest tenth. V = Bh B = • 72 V = • 49 • 14 V = 2,155.1 ft3**Example 5:**Find the volume of the cylinder. Round to the nearest tenth. V = Bh B = • 52 V = • 25 • 2 V = 157.1 m3 Diameter of base, 10m Height 2 m**Page 565**Guided Practice #’s 3-8**Read:**Pages 563-565 with someone at home and study examples!**Homework: Pages 566-567**#’s 11-28 all #’s 31-33, 35-42**Page**750 Lesson 11-2