Surface Area of Cylinders Unit 5, Lesson 3. What is a Cylinder? Definition: –A three dimensional figure with 2 circular bases. Formula for Surface Area:

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Presentation transcript:

Surface Area of Cylinders Unit 5, Lesson 3

What is a Cylinder? Definition: –A three dimensional figure with 2 circular bases. Formula for Surface Area: Why?

Find the area of a circle By Bill Rawlins

Find the area of a circle By Bill Rawlins

Find the area of both circles By Bill Rawlins

Find the circumference of a circle By Bill Rawlins

Find the circumference of a circle By Bill Rawlins

Find the area of a rectangle By Bill Rawlins

Find the area of a rectangle l w By Bill Rawlins

Find the surface area of a cylinder By Bill Rawlins

Example Calculate the surface area of: What is the radius? 13  2 = 6.5

Lateral Area of a Cylinder: The L.A. is the cylinder without the circular bases. L.A. = 2  rh

Find the Lateral Area: The radius of the base of a cylinder is 4 in. and its height is 6 in. What is the Lateral Area? L.A. = (2  r)(h) = 2  (4)(6) = 48  in 2