In a rhombus ABCD, AO=6 cm and BO=8 cm. How much is the perimeter of this rhombus?

**(A) **28 cm **(B) **35 cm

**(C) **40 cm **(D)** 48 cm

**(E)** None of the above

In a rhombus diagonals bisect each other at . Therefore, .

In , we have

**(Pythagoras Theorem)**

cm

Sides of rhombus are equal. Therefore, perimeter = 4 side **cm**

Hence, the answer is **(C)**.