In this application the following formula: The formula of speed (constant speed), the rectangle area formula, formula for the volume of a rectangular parallelepiped, a circular area of formula formula circumference, the square area of formula, formula for the area of a rectangle, a triangle area formula, area of Formula parallelogram area of the trapezoid formula , the formula square diamond area formula of a convex quadrilateral formula area of the ellipse.How will the time, add more formulas.