Answer:
120 cm^2
solution,
Given: A rhombus
To find: It's area.
Formula to find the area of rhombus:

( half of product of diagonals)
Also, in a rhombus ,the diagonals bisects each other.
So,
D1=5*2=10
D2=12*2=24
Area of rhombus:

Hope this helps..
Good luck on your assignment..