Question

If the perimeter of a rhombus is 4a and the lengths of the diagonals are x and y, then its area is 

(a) a(x + y) 

(b) x² + y² 

(c) xy 

(d) \(\frac12\)xy

Answer 1

(d) \(\frac12\)xy

Area = \(\frac12\) × Product of diagonals = \(\frac12\)xy