Circle Terms
Finding Radius
Finding Diameter
Finding Circumference
Finding Area
100

The distance from the centre of the circle to the outside. This is half of the diameter

What is radius?

100

The diameter of the circle is 4 cm

What is 2 cm?

100

The radius is 5 cm

What is 10 cm?

100

The diameter is 10 cm

What is 30 cm?

100

The radius is 2 cm

What is 12 cm2?

200

The straight line that passes directly through the centre and whose endpoints land on the circle. 

What is diameter?

200

The diameter is 12 cm

What is 6 cm?

200

The radius is 7 cm

What is 14cm?

200

The diameter is 13 cm

What is 39 cm?

200

The radius is 5 cm

What is 75 cm2?

300

The total distance around the outside of a circle

What is circumference?

300

The diameter is 48 cm

What is 24 cm?

300

The circumference is 15 cm

What is 5 cm?

300

The radius is 15 cm

What is 90 cm?

300

The diameter is 6 cm

What is 27 cm2?

400

The total amount of space inside a circle

What is area?

400

The circumference is 12 cm

What is 2 cm?

400

The circumference is 33 cm

What is 11 cm?

400

The radius is 16 cm

What is 96 cm?

400

The diameter is 10 cm

What is 75 cm2?

500

The circumference divided by the diameter. This symbol also represents 3.14  

What is Pi?

500

The circumference is 30 cm

What is 5 cm?

500

The area is 48 cm2

What is 8 cm?

500

The radius of a pool is 18 ft

What is 108 ft?

500

The diameter is 12 cm

What is 108 cm2?

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