Calculator Soup^{®}
a = length side a
b = length side b
p = q = diagonals
P = perimeter
A = area
√ = square root
Use this calculator if you know 2 values for the rectangle, including 1 side length, along with area, perimeter or diagonals then you can calculate the other 3 rectangle variables. A square calculation is a special case of the rectangle where the lengths of a and b are equal.
* Units: Note that units of length are shown for convenience. They do not affect the calculations. The units are in place to give an indication of the order of the calculated results such as ft, ft^{2} or ft^{3}. Any other base unit can be substituted.
Area of a rectangle:
A = ab
Perimeter of a rectangle:
P = 2a + 2b
Polygon diagonals of a rectangle
p = q = √(a^{2} + b^{2})
Cite this content, page or calculator as:
Furey, Edward "Rectangle Calculator" From http://www.CalculatorSoup.com - Online Calculator Resource.