Pi r squared comes from the formula to find the area of a circle.
A = pi x radius squared where pi = 3.14
pi = C / d C = pi times d d = C / pi
Pi X D = Circumference. To find Diamater if you know Circumference, divide Circumference by Pi (3.14).
The formula is pi x the diameter of the circle, which is also pi x (2 x the radius) C = pi * D C = pi * 2r
To find the circumference of a circle the formula is: 2*pi*radius or diameter*pi
The formula to find area is you do the radius squared times pi or 3.14
Circle's circumference = 2*pi*radius or diameter*pi
The formula to find the area of a circle is: A = pi * r2
pi * radius2 * height
Times it by pi
Pi r squared comes from the formula to find the area of a circle.
A = pi x radius squared where pi = 3.14
2πr (2 times pi times the radius, or pi times the diameter)
The area of a circle can be found with the formula (pi)r^2
pi = C / d C = pi times d d = C / pi
d * pi or 2 * r * pi Where d is diameter and r is radius and pi = 3.14159