Find the surface area of a cone with a slant height of 11 and a radius of 15. Use 3.14 for π

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1 Answer

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
by

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