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What would be the radius of a circle with a diameter of 8 inches?
Radius is one-half of the diameter of a circle. Therefore, the radius of an eight-inch diameter circle is four inches. The diameter of a circle is a straight line joining a point on the circumference through the centre to the 'opposite' point on the circumference.
3.14 multiplied by what number equals circumference?
The diameter, or the distance across the circle. So if my diameter was 8, I'd take eight times 3.14 and get... give me a minute... 25.12! (That was done using pencil/notecard) Or, you can find the diameter by dividing the Circumference by Pi.
What is the diameter of a circle if the radius is 4?
Eight.
Surface speed of an eight inch diameter wheel at 2000 revolutions per minute?
The circumference of an 8-inch diameter wheel = d*pi = 8*pi. Each revolution will advance the wheel by one circumference, so 2000 revolutions per minute would be 2000 * 8 * pi = 1600pi feet per minute.
When you divide a circle into eight equal parts how many eights make up to whole circle?
Eight of them.
