SJDA 7th Circumference and Area of Circles

Find the radius of a circle if the Circumference of a circle is 43.96.

Find the diameter of a circle if the area is 200.96 sq inches.

The diameter of a circle is double the _________

To get the radius of a circle you

• Multiply the diameter by two

• Divide the diameter by two

• Divide the area of circle by pi.

• Divide the Circumference by the diameter.

Label A, B, and C. Write you answer as a = ____, b = ______, c = _____. Use a comma and a space to separate the lower case letter and use upper case to write the answer.

The Distance around the edge of a circle is called the ______

• Centre

• Diameter

• Circumference

• Arc

The width of a circle that passes through the center is called a ______

• Centre

• Diameter

• Circumference

• Radius

The area of a circle with a diameter of 24 is___________

What is the area of a circle with a radius of 3.5?

What is the formula for the circumference of a circle?