Answer:
Step-by-step explanation:
d = c/pi
so d = 62.8/pi
d = 62.8/pi or appr 19.99in
r = d/2
so r = 62.8/2pi or 31.4/pi appr 19.99/2

so

then

so
a = approximately 313.84
answer is rowan
Remove the radical by raising each side to the index of the radical.
x=-1
Answer:
No solution?
Step-by-step explanation:
0 doesn't equal to -18
Answer:
63
Step-by-step explanation:
1/9 = 2/18 = 3/27 = 4/36 = 5/45 = ... = n/(9n) for any n