To find the wavelength of a wave you just have to divide the waves speed by its frequency. The formulas for the perimeter P and the area A of the rectangle are used to write equations as follows. Set up the Distance Formula.
D x 2 x 1 2 y 2 y 1 2 displaystyle d sqrt x_ 2-x_ 1 2 y_ 2-y_ 1 2 where.
Herons Formula for the area of a triangle Heros Formula A method for calculating the area of a triangle when you know the lengths of all three sides. This can be expressed in the following equation where is the length and is the width of the rectangle. The represents the horizontal leg of a right triangle and the represents the vertial leg of a right triangle. Herons Formula for the area of a triangle Heros Formula A method for calculating the area of a triangle when you know the lengths of all three sides.