#### Answer

The area of the property is 45 acres.

#### Work Step by Step

$1~acre \approx 0.4 ~hectare$
We can convert 18 hectares to units of acres.
$18~hectares = \frac{18~hectares}{1}\times \frac{1~acre}{0.4~hectare} = 45~acres$
The area of the property is 45 acres.