Answer:
See below
Step-by-step explanation:
Area of a circle = pi * r^2
for this circle : Area = 3.142 * 10 * 10 = 314.2 cm^2
The answerd is 197 because I estamited 37X5 to 40X5 is 200 than 200-3 is 197
21*10.5-3.14*(21/4)^2*2=47.4075
Since we know that:
C = 2πR
Then, we can solve the equation for R:
R = C/2π
= 72.2/2 (3.14)
= 11.50 m