1. Opener Find the volume of each prism. 2) 3) 3 cm 4 cm 5 cm 5 yd 4 yd 7 yd V = 30 cm 3 V = 70 yd 3 1) 4 in 3 in 12 in V = 144 in 3

2. “Success depends upon previous preparation, and without such preparation there is sure to be failure.” - Confucius

3. □ I will be able to find the volume of cylinders. Objective

4. Volume V= Bh where B is the “base” area of the cylinder. h B r

5. Ex 1 – Finding the Volume of a Cylinder Find the volume of the cylinder. 3 ft B = 3.14(2) 2 B = 12.56 ft 2 V = Bh V = (12.56)(3) V = 37.68 V = 37.68 ft 3 A C = π r 2 2 ft

6. Ex 2 Find the volume of the cylinder. 10 cm 4 cm B = 3.14(2) 2 B = 12.56 cm 2 V = Bh V = (12.56)(10) V = 125.6 V = 125.6 cm 3 A C = π r 2

7. Ex 3 Find the volume of the cylinder. 10 yd 8 yd B = 3.14(5) 2 B = 78.5 yd 2 V = Bh V = (78.5)(8) V = 628 V = 628 yd 3 A C = π r 2 5 yd

8. Ex 4 Find the missing side. ? B = 3.14(3) 2 B = 28.26 in 2 V = Bh 141.3 = (28.26)(h) 5 = h h = 5 in A C = π r 2 3 in V = 141.3 in 3

9. Homework WB 10.5 (#1-11)