Rhombus Formula

Equation for calculate rhombus is,

(i). A = b × a
(ii). A = ½ × d₁ × d₂
(iii). A = s² × sin(a)
(iv). Perimeter = 4S

where,
A - the area of a rhombus
a - is the altitude (height)
b - is the length of the base
d₁, d₂ - the length of diagonals
s - length of any side