The circumference of a circle is π*d = 2*π*r and in this case r = x However we are integrating relative to the change in y, so we will use the linear equation x = 5*y and the circumference is: 2*π*5*y Δy as Δy-->0 = 2*π*5*y dy 2 ∫ 10*π*y dy 0 .........................2 = 10*π*((y^2)/2) ] .........................0 = 10*π*(4/2) = 20*π = 20*3.1416 = 62.832

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