Area and Circumference of Circles

The diameter of a circle is 3 centimeters. What is the circumference?

• 11.5cm2

• 9.42 cm2

• unicorns are awsome

• 45.3 cm2

Find the area of the circle

• 43.96

• 153.86

• 87.82

• 307.72

Find the circumference of the circle

• 87.82

• 153.86

• 43.96

• 307.72

Match the following

• Sector Area

• Area of a Circle

• circumference of a circle

• Arc Length

Mark has a circlular fire pit with a diameter of 5 feet. * Build a brick border around the pit. * Find the area of pit. Complete the statements about Mark's circular pit. To build the border, Mark needs a minimum of feet​ (a)   The area of the pit, to the nearest square foot is ​ (b)  

• 16

• 20 sq ft

• 7

• 8

• 9

• 15

• 8 sq ft

• 79 sq ft

• 314 sq ft

Match the following definitions to the terms:

• square units (units²)

• Area of a circle

• Circumference of a circle

• feet, cm, inches

• Units of circumference

• The distance around a circle

• How much space a circle takes up

• Units of area

Mark has a circlular fire pit with a diameter of 5 feet. Build a brick border around the pit. Find the area of pit. Complete the statements about Mark's circular pit. To build the border, Mark needs a minimum of feet​ (a)   The area of the pit, to the nearest square foot is ​ (b)  

• 16

• 20 sq ft

• 7

• 8

• 9

• 15

• 8 sq ft

• 79 sq ft

• 314 sq ft

Match the formulas to the measurements indicated.

• 2r

• To find the circumference of a circle use:

• d/2

• To find the area of a circle use:

• To find the radius of the circle use:

• To find the diameter of a circle use:

Mark has a circlular fire pit with a diameter of 5 feet. Build a brick border around the pit. Find the area of pit. Complete the statements about Mark's circular pit. To build the border, Mark needs a minimum of feet​ (a)   The area of the pit, to the nearest square foot is ​ (b)  

• 16

• 20 sq ft

• 7

• 8

• 9

• 15

• 8 sq ft

• 79 sq ft

• 314 sq ft

• area

• circumference

• square root