Geometry Formulas | Mathematical Formulas

a^2 + b^2 = c^2

In a right triangle, the square of the hypotenuse equals the sum of squares of the other two sides.

A = \pi r^2

Calculates the space inside a circle using its radius.

C = 2\pi r

Calculates the circumference of a circle.

A = \frac{1}{2}bh

Calculates the area of a triangle given base and height.

V = \frac{4}{3}\pi r^3

Calculates the volume of a sphere.

A = \sqrt{s(s-a)(s-b)(s-c)}

Calculates the area of a triangle using only the lengths of its three sides.

A = \frac{a+b}{2}h

Calculates the area of a trapezoid by averaging the two parallel bases.

V = \frac{1}{3}\pi r^2 h

Calculates the volume of a cone, which is exactly one-third of a cylinder with the same dimensions.