Calculate Circle Radius When Circumference = 9: Using C = 2πr

Question

Calculate the radius using the circumference given in the figure:

00:00 Find the circle's radius (R)

00:04 We'll use the formula for calculating circle circumference

00:09 We'll substitute appropriate values according to the given data and calculate to find the radius

00:20 We'll isolate radius R

00:30 We'll substitute the value of pi and calculate to find radius R

00:44 And this is the solution to the problem

1.432