4. circumference= 31.4
radius= do not know
area= do not know
Can anyone help me solve how to do this
Circumference = 2pi(r) where r = radius
2pi(r) = 31.4
r = 31.4/2pi = 5
Area = pi(r^2) = pi(5^2) = 25pi = 78.54
Content will be erased after question is completed.
Enter the email address associated with your account, and we will email you a link to reset your password.
Forgot your password?