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Question

Find the curved surface area and total surface area of a cone whose
Base diameter =28cm, slant height =50cm
Base diameter =70cm, height 8.4cm
  1. 2200cm2,2816cm2;10110cm2,13860cm2
  2. 2200cm2,2815cm2;10010cm2,13860cm2
  3. 2200cm2,2816cm2;10010cm2,13860cm2
  4. 2200cm2,2816cm2;10010cm2,13660cm2

A
2200cm2,2816cm2;10010cm2,13860cm2
B
2200cm2,2815cm2;10010cm2,13860cm2
C
2200cm2,2816cm2;10110cm2,13860cm2
D
2200cm2,2816cm2;10010cm2,13660cm2
Solution
Verified by Toppr

radius=14, slant height =50
Curved surface area of cone=π(14)(50)=2200cm2
Total surface area of coneπr(r+l)=π(14)(14+50)=2816cm2

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