The perimeter of a rhombus is 100 cm. One of the diagonal is 40 cm. What is the ratio of the two diagonals?
Show answer & explanation
Correct answer: C
Explanation
Side = 100 / 4 = 25 cm
Half-diagonal = 40 / 2 = 20 cm
25² = 20² + x²
625 = 400 + 225
x = 15
Second diagonal = 30 cm
Therefore, the ratio of the diagonals = 40 : 30 = 4 : 3