The diagonals of two squares are in the ratio of 2 : 5. Find the ratio of their areas. Choose the correct choice from the following choices
A) 4 : 25 B) 4 : 15 C) 3 : 25 D) 3 : 15 E) none of these

Rationale: explanation : let the diagonals of the squares be 2 x and 5 x . then ratio of their areas will be area of square = 1 / 2 ∗ diagonal 2 1 / 2 ∗ 2 x 2 : 1 / 2 ∗ 5 x 2 4 x 2 : 25 x 2 = 4 : 25 option a
Answer: A