Answer: Radius is the measurement of a straight line from the center of a circle to the edge. Radius will always equal one half diameter. Diameter is the measurement of a straight line across the center of an object (in this case a wheel). The circumference of a circle is the total distance around its outside. Circumference equals the diameter of the circle times π (pi), which is about 3.14. One revolution of a wheel will make it move a distance equal to its circumference. Reply
Answer:
Radius is the measurement of a straight
line from the center of a circle to the edge.
Radius will always equal one half diameter.
Diameter is the measurement of a
straight line across the center of an object
(in this case a wheel).
The circumference of a circle is the total
distance around its outside.
Circumference equals the diameter of the circle times
π (pi), which is about 3.14. One revolution
of a wheel will make it move a distance
equal to its circumference.