B and D are the correct choices
Answer:

Step-by-step explanation:
We have a right triangle with long side of 11in and smaller sides 14in/2=7in and h.
We know that

Answer:
12.566368 units
Step-by-step explanation:
2(pi)r = C
2(pi)(2) = C
4(pi) = C
4(3.141592) = C
12.566368 = C