It is given in the question that the diagonal lengths of a kite are 10.2 ft and 8 ft .
And we have to find the area of the kite .
And to find the area, we use the following formula.
[tex]Area= \frac{p q}{2}[/tex]
Where p and q are the diagonal lengths .
Substituting the values of the given length of diagonals, we will get
[tex]Area= \frac{10.2*8}{2} = 40.8 ft^2[/tex]
And that's the required area .