1. C HAPTER 9 Lesson 5

2. Q UOTABLE “Every great dream begins with a dreamer. Always remember, you have within you the strength, the patience, and the passion to reach for the stars to change the world.” Harriet Tubman

3. O BJECTIVE Find volumes of prisms and cylinders

4. F ORMULAS Volume of a prism= base area x height Also thought of as length x width x height Volume of a cylinder = Πr²h Also thought of as the area of a circle times the height.

5. E XAMPLE 1 A watering trough is in the form of a trapezoidal prism. Its ends have the dimensions shown. How long is the trough if it hold 12 m³? 2.4 m 1.6 m h 1.2 m

6. E XAMPLE 2 A cylindrical storage tank 1 m in diameter is 1.2 m high. Find its capacity in liters? Use Π ≈ 3.14.

7. T RY IT … Find the volume of the solid. Use Π ≈ 3.14 A)480 cm³ B)2400 cm³ C)4800 cm³ D)240 cm³

8. H OMEWORK Pg. 328-329; 1-12