In plane geometry, A rectangle is a four-sided flat shape. rectangle's Each internal angle is 90°. Opposite sides of rectangle are parallel and of equal length.
Area = w × L
Perimeter = 2(w+L)
Diagonal "d" = √(w2 + L2)
For example, When width =2, length = 3, the area = 6, perimeter = 10, diagonal = 3.6056
For example, When width =2, perimeter = 20, the length = 8, area = 16, diagonal = 8.2462