See all Area lessons. Area of an arch. You can find the area in square units of the rhombus by multiplying the lengths of the two diagonals d1 d 1 and d2 d 2 and dividing by two.
Where A Area of rhombus.
B is the length of the base. In Geometry a rhombus is a closed two-dimensional figure with four sides. Use the calculator below to calculate the area of the rhombus given the base side length. The altitude times the side length.