Respuesta :
[tex]\displaystyle \\ A = 5 \times \frac{\text{side length}\times \text{apothem}}{2}= 5 \times \frac{18 \times 25}{2}= 5 \times 9 \times 25=\boxed{1125}[/tex]
The area can be found by multiplying half of the perimeter by the apothem.
Here, the perimeter is 18*5=90
So, 25(45)=1125
So, 25(45)=1125