Just double 18.75 because the total area needed to cover is 2 square meters
The area of the triangle is 60 cm .
the 2nd figure's area is 2520 cm.
I wish I could help you but get got it the answers are more correct and accurate
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
A is the correct answer !