One of the diagonal of a rhombus is 60% of other diagonal. How many times the square of the length of the other diagonal equals the area of the rhombs?

One of the diagonal of a rhombus is 60% of other diagonal. How many times the square of the length of the other diagonal equals the area of the rhombs?

A 4/5

B 3/4

C 3/10

D 3/5

E none of these

Solution

Correct Answer: Option C

Let the length of the other diagonal = d

∴ The length of the 1^st diagonal = 0.6d

∴ Area of rhombus = (1/2)×d×(0.6 d)

= 0.3 d²

= (3/10) d²