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Earn +20 ptsQ: What are the formulas for finding the circumference diameter and radius?
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How do you find the radius of a circle only knowing the circumference?
The equation for finding the circumference of a circle is diameter times pi so reverse it to circumference divided by pi which leaves the diameter. The diameter is twice as big as the radius so divide the diameter by 2 and you will find the radius.
If 2.5 is the diameter then what is the radius?
Radius is 1/2 of a diameter. 2.5/2 is 1.25. Radius is necessary in finding the circumference and area of a circle.
How do you find the diameter and then the circumference if you have the radius?
Diameter = radius * 2 Circumference = pi * diameter.
What is the formula for finding the radius of sphere?
1/2 diameter or the circumference/pi/2
What is the formula for finding circumfernce?
circumference of a circle = 2*pi*radius or pi*diameter
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