There are thousands of formulae which use pi:Circumference of circle = 2*pi*radius
Area of circle = pi*r^2
Area of ellipse = pi*semiaxis1*semiaxis2
Surface area of sphere = 4*pi*r^2
Volume of sphere = 4/3*pi*r^3
pi also appears in some of the most common statistical distributions: the Gaussian (or Normal) as well as Student's t-distribution.
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a formula that uses pi is the circumference and area of a circle and every polyhedron that has a circle
Circumference of a circle = 2*pi*radius or pi*diameter Area of a circle = pi*radius2 Volume of a sphere = 4/3*pi*radius3 Surface area of a sphere = 4*pi*radius2 Total surface area of a cylinder = (2*pi*radius2)+(2*pi*radius*height)
the circumference formula uses pi and the formula is pi (3.14) times what ever the diameter is and that's one formula i know and I'm in fifth grade
Pi = circumference/diameter