yukan make kone from paper kut like a triangel, but with kerved base
area av this part=(slant hite)*rim-leng/2
rim-leng=2pi*radius
radius=15 & slant hite=11
area1=2*pi *15*11/2=pi*15*11
=165*pi =165*3.14159265
=518.36235, or bout 518
Then add in base area=pi*rad*rad=pi*15*15
=225*3.14159
=706.858