please help....can any one solve it

Answer:
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Step-by-step explanation:
Using the formulas of the area of a quadrilateral, the area (A) of the given kite is, A = (1/2) × d1 × d2 = (1/2) × 18 × 15 = 135 square units
If four coordinates are given then:-
Find length of the sides using distance formula
[tex]\boxed{\sf \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}}[/tex]
Now break down into two triangles .
Use herons formula and find areas of the triangles .add them and get the area