2. Lesson Menu Main Idea Key Concept:Surface Area of a Cylinder Example 1:Surface Area of a Cylinder Example 2:Real-World Example

3. Main Idea/Vocabulary Find the surface area of a cylinder.

4. Key Concept

5. Example 1 Surface Area of a Cylinder Find the surface area of the cylinder. Round to the nearest tenth. S.A.= 2  rh + 2  r 2 Surface area of a cylinder = 2  (3)(6) + 2  (3) 2 Replace r with 3 and h with 6.  169.6 Simplify. Answer:The surface area of the cylinder is about 169.6 square centimeters.

6. Example 1 CYP A.3,386.6 cm 2 B.747.7 cm 2 C.527.8 cm 2 D.483.8 cm 2 Find the surface area of the cylinder. Round to the nearest tenth.

7. Example 2 POOLS The Hamid family installed a circular pool in their backyard. They need to put a fence that is 9 feet high around the pool. The distance from the center of the pool to the edge of the fence is 28 feet. How much fencing is needed for the fence? S.A.= 2  rhCurved surface of a cylinder = 2  (28)(9)Replace r with 28 and h with 9.  1,583.4 Simplify. Answer:They will need about 1,583.4 square feet of fencing.

8. Example 2 CYP A.176,714.6 ft 2 B.37,227.9 ft 2 C.36,285.4 ft 2 D.1,885.0 ft 2 ICE SKATING The city of Woodbury is building an ice rink and they need to put a barrier around the circle of ice. The barrier will be 4 feet high. The distance from the center of the ice to the barrier is 75 feet. What is the surface area for a barrier with these dimensions?