Asolid oblique pyramid has a regular pentagonal base. the base has an edge length of 2.16 ft and an area of 8 ft2. angle acb measures 30°. point a is the apex and point c is the center of the hexagon. line a b shows the vertical height of the pyramid. triangle a b c is a right triangle with a base length of 7 startroot 3 endroot feet. what is the volume of the pyramid, to the nearest cubic foot?
a. 5 ft3
b. 9 ft3
c.14 ft3
d.19 ft3