Find the diagonal c in the cylinder.

D. 12.1 yd
E. 11.2 yd
F. 8.7 yd10

Since we know that the diagonal of a cylinder can be found using the formula c = √(h^2 + (2r)^2), where h is the height of the cylinder and r is the radius, we first need to calculate the radius.

First, we need to realize that the radius of a cylinder can be found using the formula r = d/2, where d is the diameter. We know that the diameter is 8.7 yd, so the radius would be:

r = 8.7 yd / 2
r = 4.35 yd

Now, we can plug this radius into our diagonal formula:

c = √((12.1 yd)^2 + (2*4.35 yd)^2)
c = √(146.41 yd^2 + 37.71 yd^2)
c = √184.12 yd^2
c ≈ 13.56 yd

Therefore, none of the given answer choices are correct.