The options of this question are:
1.

2.

3.

4.

5.

The formula for area of rhombus is given by:
A =
where
and
are the diagonals of rhombus.
We have to determine the equivalent expressions.
Since, A =
Multiplying both sides of the above equation by 2, we get
2A =

So,
and

Hence, Option 1 and 4 are the equivalent expressions.