Area of a square is 1/2 hectare. The diagonal of the square is?
Choose the most appropriate option:  A) 250 meter  B) 100 meter  C) 50 √ 2 meter  D) 50 meter  E) 35 meter

Rationale: area = 1 / 2 hectare = 10000 / 2 m 2 = 5000 m 2 again area = 1 / 2 x ( diagonal ) 2 so 1 / 2 x ( diagonal ) 2 = 5000 m 2 diagonal 2 = 10000 diagonal = 100 answer : b
Answer: B