The circumference or perimeter of the circle has the formula 2*pi*r, where r is the radius of the circle. This could then be easily calculated:
C = 2*pi*r
53.38 = 2*3.14*r
53.38 = 6.28r
r = 53.38/6.28
r = 8.5 ft
Thus, the radius of the circle has a length of 8.5 feet.
Answer:
Yes, because
is equivalent to 
Step-by-step explanation:
and 

Hope this helps!
Answer:
k=1
Step-by-step explanation:
-2k+10=64k-56
66=66k
k=1
Because they both have two angles tbat are the same size