2. Draw circles of different radii and calculate the quotient of circumferences by diameter. What do you observe from this? (Measure the circumference using thread)
Answers
Answer:
Lesson Focus
Calculating the Circumference of a Circle
Pre-Algebra
Learning Made Easy
Calculate the circumference of the paint roller using the diameter or radius.
Over 1,200 Lessons: Get a Free Trial | Enroll Today
Now You Know
After completing this tutorial, you will be able to complete the following:
After completing this Activity Object, learners will be able to:
Use the formula <img src../../../tutorials/images/teacherguides/US830805IE_1.png\" width=\"70\" height=\"21\" alt=\"\" border=\"0\">to calculate the circumference of a circle.
Use the formula <img src../../../tutorials/images/teacherguides/US830805IE_2.png\" width=\"65\" height=\"17\" alt=\"\" border=\"0\">to calculate the circumference of a circle.
Everything You'll Have Covered
The circle is the locus of all points that are at an equal distance from a given point called the center.
The basic parts of a circle are the center, diameter, radius, and circumference.
The diameter of a circle is the length of a line segment that passes through the center of circle to any point on the circle.
A 12-inch pizza is an example of a diameter: when you make the first cut to slice a round pizza pie in half, this cut is the diameter of the pizza.
Therefore, a 12-inch pizza has a 12-inch diameter.
Answer:
Lesson Focus
Calculating the Circumference of a Circle
Pre-Algebra
Learning Made Easy
Calculate the circumference of the paint roller using the diameter or radius.
Over 1,200 Lessons: Get a Free Trial | Enroll Today
Now You Know
After completing this tutorial, you will be able to complete the following:
After completing this Activity Object, learners will be able to:
Use the formula <img src../../../tutorials/images/teacherguides/US830805IE_1.png\" width=\"70\" height=\"21\" alt=\"\" border=\"0\">to calculate the circumference of a circle.
Use the formula <img src../../../tutorials/images/teacherguides/US830805IE_2.png\" width=\"65\" height=\"17\" alt=\"\" border=\"0\">to calculate the circumference of a circle.
Everything You'll Have Covered
The circle is the locus of all points that are at an equal distance from a given point called the center.
The basic parts of a circle are the center, diameter, radius, and circumference.
The diameter of a circle is the length of a line segment that passes through the center of circle to any point on the circle.
A 12-inch pizza is an example of a diameter: when you make the first cut to slice a round pizza pie in half, this cut is the diameter of the pizza.
Therefore, a 12-inch pizza has a 12-inch diameter.