A rhombus has diagonals 16 cm and 12 cm. The side of the rhombus is

1. Rhombus diagonals bisect at 90 degrees. 2. Half-diagonals are 8 cm and 6 cm. 3. Side^2 = 8^2 + 6^2 = 64 + 36 = 100. 4. Side = 10 cm. _Source: Selina Concise Mathematics Class 9, Ch on Pythagoras Theorem (Mistral OCR'd PDF), section on rhombus_