mark arcaro geometry high school after today’s lesson i can… ◦ identify the different parts...

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Introduction to Circles Mark Arcaro Geometry High School

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The Parts of a CircleRadius (r )Diameter (d ) Circumference (C )The radius is equal to half of the diameter. So the radius can be found by r = d/2How to Find the Circumference The circumference of the circle is 9.42 centimeters.3 cmHow to Solve For The Area4 cm The area of the circle is 50.27 centimeters squared. What is the circumference of this circle?3.78 cm15.71 cm7.85 cm9.34 cm5 cmd = 5What is the area of this circle? 28.27 cm18.85 cm 113.10 cm9.42 cm 6 cmd = 6 cmOther1279.9995Other1279.9995