A rhombus has all sides equal to 10 cm and one diagonal is 12 cm. What is the other diagonal?
Show answer & explanation
Correct answer: A
Explanation
Side = 10 cm
One diagonal = 12 cm
According to the formula:
In a rhombus, the diagonals bisect each other at right angles.
(12/2)² + (d/2)² = 10²
6² + (d/2)² = 100
36 + (d/2)² = 100
(d/2)² = 64
d/2 = 8
d = 16 cm