Answer:
A = 1/8·pi·r^2 = 1/8·pi·6^2 = 9/2·pi = 14.14 inches²
Answer:


Step-by-step explanation:







Answer:
The bottom one.
Step-by-step explanation:
The answer is 38, because if you take away the 15 he bought afterwards (34-15) you get 19, and then since he sold half his collection you would double that (19×2) and that's 38.