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Pi (π) is intertwined with the circle in all sorts of ways. First of all, it is the ratio of a circle's circumference compared to its diameter. Meaning, if a circle has a diameter of 1 m, its circumference is π m, or roughly 3.14 m.
You also use π to find the area of a circle, the formula being πr2
You can get into more complicated uses of π and circles in calculus and physics, but it all relates back to its ratio constant for circumference.
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Is Pi 3.14?
Pi is the circumference of a circle divided by the diameter of a circle. 3.14 is an approximation of Pi. It is not possible to display the value of Pi. (See the related questions.)
What is the formula for finding circumference and area of a circle?
Circumference of a circle is (pi * diameter). Area of a circle is (pi * r2).
What is the circumference of 23cm circle?
circumference of a circle = 2*pi*radius or pi*diameter
What happens to the area of a circle when the radius is tripled?
The area of the circle becomes 9 times the area of the original circle. Original circle = Pi * (r ^ 2) = Pi * r * r New Circle = Pi * ((3 * r) ^ 2) = Pi * 9 * r * r
What is the formula using pi for the area of a circle?
area of a circle is equal to pi times the square of its radius.. A=(pi)r^2
