What is the area (in m$$^2$$, up to 1 place of decimal) of an equilateral triangular field of sides 8.5 m?

A

$$\frac{18.1}{\sqrt{3}}$$

B

$$18.1 \sqrt{3}$$

C

$$\frac{72.25}{\sqrt{3}}$$

D

$$72.25 \sqrt{3}$$