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.