If the product of diagonals of a rhombus is 76 sq.unit, then find the area of given rhombus in sq.unit.
Find the area of a rhombus if its vertices are (3, 0), (4, 5), (− 1, 4) and (− 2, −1) taken in order. [Hint: Area of a rhombus = (product of its diagonals)]