The surface area of a cone is pi*r^2 + pi*r*s, here r=26cm and s=20cm, so

S = pi*26*(26+20) = pi*26*46 = approx. 3757,34 (square cm)

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