Question

Find the area of quadrilateral, whose diagonals of lengths 18 cm and 13 cm intersect each other at right angle.

Answer 1

When two diagonals of a quadrilateral intersect each other at right angles,

Area of quadrilateral = `(1)/(2) xx "Product of the diagonals"`

∴ Area of required quadrilateral

= `(1)/(2) xx 18 xx 13`
= 117cm².