Mark Arcaro Geometry High School  After Today’s Lesson I Can… ◦ Identify the different parts of a circle. ◦ Solve for the circumference of a circle.

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Presentation transcript:

Mark Arcaro Geometry High School

 After Today’s Lesson I Can… ◦ Identify the different parts of a circle. ◦ Solve for the circumference of a circle. ◦ Solve for the area of a circle.

Radius (r ) Diameter (d ) Circumference (C ) The radius is equal to half of the diameter. So the radius can be found by r = d/2

The circumference of the circle is 9.42 centimeters. 3 cm

4 cm The area of the circle is centimeters squared.

3.78 cm15.71 cm 7.85 cm9.34 cm 5 cm d = 5

Move on to Question #2

Retry Question

28.27 cm cm cm9.42 cm 6 cm d = 6 cm

Retry Question

DONE!

 Math Goodies ◦