Find the area of a regular pentagon with a side length of 18 and an apothem of 25.
1075
1100
1125
1150
please show me the steps and answer

Question

Find the area of a regular pentagon with a side length of 18 and an apothem of 25. 
   1075  
   1100  
   1125  
   1150  
please show me the steps and answer

anonymous · Answer

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

jhonyy9 · Answer

area of one triangle will be 18*25/2 =9*25=225 so this we need multiplie by 5 because there is pentagon so 5*225=1125 
- so the result right ,correct is 1125