Keyword Analysis & Research: diameter

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Frequently Asked Questions

What is the formula for calculating diameter?

If you know the area of the circle, divide the result by π and find its square root to get the radius; then multiply by 2 to get the diameter. This goes back to manipulating the formula for finding the area of a circle, A = πr 2 , to get the diameter. You can transform this into r = √ (A/π) cm .

How do you figure out diameter?

Divide the circumference (perimeter) by pi. That gives you the diameter. ... To get the area, square the radius, and then multiply by pi.

How do you find the radius if you have the diameter?

The radius of a circle is the distance from the center of the circle to any point on its circumference. The easiest way to find the radius is by dividing the diameter in half.


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