The Area of a Kite.
The area of a Kite is given below:
[tex]\text{Area = 2\lbrack}\frac{1}{2}bh\rbrack[/tex]Where b = 21m (diagonal 1 )
h = height = 8.5m (half of the diagonal 2) , that is , 17/2 = 8.5 m
[tex]\begin{gathered} \text{Area of the Kite = 2(}\frac{1}{2}\times21\times8.5) \\ \text{ = 21}\times8.5=178.5m^2 \end{gathered}[/tex]Hence, the correct answer is 178.5 square meters.