Recall that the volume of a regular prism is given by the area of the base times the height.
Given that the base of the prism is a regular pentagon with an apothem of 2.8 centimeters.
The pentagon consist of 5 isosceles triangles with the apothem as the height and the side of the pentagon as the base.
Recall that the are of a triangle is given by 1/2 base times height.
Thus the area of of the pentagon base of the prism is given by

Therefore, the volume of the prism is given by
Answer:
16.C
17.20
Step-by-step explanation:
16.Add 8+5=13
17.Add 12+8=20
3+8+10+14+11= 46
46/(how many trees) 5= 9.2
9.2 years is your answer.
This is the answer and the steps