3/12 and 8/12
The common denominator is 12
4 times 3.14 times 8 squared
803.8
Answer:
r equals StartFraction C Over 2 pi EndFraction
Step-by-step explanation:
we know that
The circumference of a circle is equal to

where
r is the radius of the circle
Solve for r
That means -----> isolate the variable r
Divide by 2π both sides

Simplify right side

Rewrite

so
r equals StartFraction C Over 2 pi EndFraction
The answer is gonna be C,which is 91.Hope this helps