Rectangle Area Calculator
Area = base perimeter x height + 2 x base area.
Base perimeter = 2 x (length + width)
Base area = length x width
Or: surface area = (length x width + length x height + width x height) x2
Area = base perimeter x height + 2 x base area.
Base perimeter = 2 x (length + width)
Base area = length x width
Or: surface area = (length x width + length x height + width x height) x2