Equation to find area of a
- equation to find area of a quadrilateral
- equation to find area of a right triangle
- equation to find area of a sphere
- equation to find area of a sector
- equation to find area of a cylinder
- equation to find area of a trapezoid
- equation to find area of a square
- equation to find area of a rectangle
- equation to find area of a triangle
- equation to find area of a circle
