The diagonals of a rhombus are 15 cm and 20 cm. Find its area? August 3, 2021July 15, 2019 by admin The diagonals of a rhombus are 15 cm and 20 cm. Find its area? A. 120 sq m B. 300 sq mC. 150 sq m D. 480 sq m 1/2 * 15 * 20 = 150