Answer:
B) 12.25πm²
Step-by-step explanation:
The formula for the circumference of a circle is
C = 2πr
The circumference of your circle is
C = 7πm
If we factor out a 2 from the 7, we get
C = (2 × 3.5)πm = 2π(3.5m)
Now, if we compare the two formulas, we see that
r = 3.5m
The formula for the area of a circle is
A = πr²
If r = 3.5m, then the area of your circle is
A = π(3.5m)² = 12.25πm²
