2 2 2 Ans: a = 15 – 12 = 225 – 144 = 81 = 9 2 So, a = 9 m 10) The diagonals of a rhombus measure 16 cm and 30 cm. Find its perimeter. 4 2 2 2 2 Ans: (length of each side) = 15 + 8 = 289 = 17 length of each side = 17 cm Perimeter = 4 x 17 = 68 cm