The equation to find the surface area of a cone is: (3.14)r(r+ √h^2+r^2) in this case r= 7 and h = is not provided so it must be found.
To find h simply use a^2+b^2=c^2 considering this is a right circular cone (7^2+h^2=15^2 h=√176)
So the area is about 483.81 square millimeters
