Question

A joker 's cap is in the form of a right circular cone of base radius7cm and height 27cm.find the area of the sheet required to make 10 such caps.

Answer 1

the radius of the cap= 7cm
the height of the cap= 27cm
   l=√r²+h²
      =√7²+27² =27.89
  ∴csa of cone = πrl
  =22/7*7*27.89
  =613.58cm²
csa of 1 cone is 613.58cm²
∴csa 10 cap= 613.58*10
                   =6135.8cm²

Answer 2

Answer:

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