Question: what is the formula of diagonal of quadrilateral?
Answer: The four sides of a rhombus have equal measure, so each side has measure one fourth of the perimeter of 48, which is 12. \displaystyle RX = HX \cdot \sqrt{3} = 6 \sqrt{3}. Since the diagonals of a rhombus bisect each other, \displaystyle RO = 2 \cdot RX = 2 \cdot 6 \sqrt{3} = 12\sqrt{3}.