Circle Terms
Area
Circumference
Circle Formulas
Word Problems
100

What is the circumference?

The perimeter of a circle.

100

Find the area of a circle with a radius of 10mm.

314mm2

100

If the radius is 1cm what is the circumference?

6.28cm

100

What is the formula to find the circumference with the diameter?

πd

100

A plate has a diameter of 5cm what is the circumference of the plate?

15.7cm

200

What is the diameter line?

A line that goes from one end of the circle to the other, and goes through the center.

200

If the diameter is 22cm then what is the area?

379.94cm2

200

If the diameter is 33.7m what is the circumference?

105.81m

200

What is the formula to find the circumference with the radius?

2πr

200

A circular table has a circumference of 1.97m what is the diameter?

0.62m

300

What is a chord line?

A line from one end of the circle to the other, that doesn't go through the center of the circle.

300

If the diameter of a circle is 34.98 what is the area?

113342.06

300

If the radius is 738.960mm what is the cirumference?

4 640.66mm

300

What is the formula to find the area with the radius?

πr2

300

If a circular race track is 94.7m in diameter how far would you walk to go around the whole track?

297.35cm

400

What is a secant line?

A straight line cutting a curve at two or more points.

400

If the radius of the sun is 696 340km what is the area?

2 186 507.6km2

400

If the area of a pie is 4cm whats the circumference?

7.08cm

400

What is the formula to find the radius with circumference?

c/π/2

400

Sally has a pizza with six even slices. The diameter of the pizza is 33.5cm. What is the area of one slice of pizza?

8.76cm2

500

What is a tangent line?

A tangent is a line that touches the edge of a curve or circle at one point, but does not cross it.

500

If the circumference of a hockey puck is 9.42in what is the area?

7.06in2f

500

If the area of sticker is 8.9cm2 what's the circumference?

10.57cm2

500

What is the formula to find the radius with area?

√(A/π)

500

Leo ran around a circular field 5 times. He ran a total of 4.67 kilometers. What is the radius of the field?

0.14km