Circle Terms
The distance from the center of a circle to the outside, also half of the diameter
Radius
The diameter of this circle is 5m, what is the radius?
2.5m
The radius of this circle is 5m, what is the diameter?
10m
The radius for this circle is 10m, what is the circumference?
62.8m
The radius of this circle is 2m, what is the area?
12.56m2
The distance from one end of the circle to the other end (through the center).
Diameter
The diameter is 12cm, what is the radius?
What is 6cm
The radius of this circle is 2.5cm, what is the diameter?
5cm
The radius for this circle is 13cm, what is the circumference?
81.64cm
The radius of this circle is 3cm, what is the area?
28.26cm2
The distance around the circle
Circumference
The diameter of this circle is 27mm, what is the radius?
What is 13.5mm
The radius is 15.7m, what is the diameter?
7.85m
The radius of this circle is 25cm, what is the circumference?
157cm
The radius of this circle is 21mm, what is the area?
1384.74mm2
The total amount of space inside of a circle
Area
The diameter of this circle is 437km, what is the radius?
218.5km
The radius of this circle is 18.84cm, what is the diameter?
9.42cm
The radius for this circle is 45cm, what is the circumference?
282.6cm
The radius of this circle is 52.4cm, what is the area?
8621.69 cm2
3.14 represents....
Pi
The diameter of this circle is 0.325m, what is the radius?
0.1625m
The radius of this circle is 194.68cm
97.34cm
The radius for this circle is 32.86m, what is the circumference?
206.36m
The radius of this circle is 6955mm, what is the area?
151 888 158.5mm2