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

Secure Information

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?

Sign Up