Circumference of a Circle

Circle Terms

100

What is the formula to use when the radius is given?

C = 2𝜋r

200

What is the formula to be used for the diameter given?

C = 𝜋d

300

What do we call the distance around the circle?

Circumference

THE RADIUS IS GIVEN

100

Solve the Circumference of a circle if the radius is 15 cm?

94. 2 cm

200

Solve the Circumference of a circle if the radius is 16m?

100.48m

300

Solve the Circumference of a circle if the radius is 13 cm?

 81. 64 cm

THE DIAMETER IS GIVEN

100

The diameter of a circular fence is 12 m. Find its Circumference?

37.68 m

200

The diameter of a circular fence is 7 m. Find its Circumference?

21.98 m

300

Find for the Circumference of a circle with a diameter of 9 cm?

28.26 cm

400

The diameter of a circular fence is 17 m. Find its Circumference?

53.38 m