Answer:
1/2 h (b1+b2)
Step-by-step explanation:
A rhombus is a special type of trapezoid.
Bases are b1 and b2 and height is h
Applying the same formula for trapezium,
we get area of a rhombus
= 1/2 h (b1+b2)
So answer is
area of a rhombus = 1/2 h (b1+b2)
where h is the height and b1 and b2 are one pair of parallel sides
(h is the distance between the pair of parallel sides)