A pencil consisting of 3 parts - a cone, a cylinder and a hemisphere. Given the radius of the hemisphere is 0.7cm and the slant height of the cone is 2 times its radius. Find the total surface area of the pencil. (Answer given in the book is 53.24cm square).

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anonymous · Answer

oops sorry forget to mention the height of the cylinder is 10.7cm. Thanks~

anonymous · Answer

ok no problem~ pls help me when u are free~ thanks~

anonymous · Answer

lol it is a diagram actually let me draw it out ><"|dw:1359571839087:dw|