Data input
hc = Cone height
hd = cylinder height
r = radius
r= 11/2 = 6.5 yd
hc = 9 yd
hd = 13 yd
Procedure
First we will calculate the volume of the cylinder

Second we will calculate the volume of the cone

The total volume would be the sum of the two volumes calculated above.

Total volume equals 2122.63 yd^3