Example:
The area of a rhombus is 150 sq cm. One of its diagonals is 15 cm. Find the length of the other diagonal.

Solution: The area of a rhombus (A) = 1/2 * d_{1} * d_{2}.
Given that,
A = 150 sq cm. and d_{1} = 15 cm.
Hence d_{2} = 2A/d_{1}
= (2*150)/15
= 20 cm.
Therefore, the length of other diagonal = 20 cm.

Directions: Read the above example carefully and answer the following questions. Also write at least 10 examples of your own.