The radius of a cone is 5 cm and height is 12 cm.
Find the curved surface area of cone.
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surface area= 204.28 cm^2
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Diagram :-
Given :-
- Radius of cone = 5 cm
- Height of cone = 12 cm
To Find :-
- Curved Surface Area of cone = ?
Answer :-
- Curved Surface Area of cone = 204.2 cm²
Explaination :-
First we have to calculate the Slant Height of the cone :
➝ Slant Height = √(Radius)² + (Height)²
➝ Slant Height = √(5)² + (12)²
➝ Slant Height = √25 + 144
➝ Slant Height = √169
➝ Slant Height = 13 cm
Hence,the slant height of the cone is 13 cm.
Now, let's find the CSA of cone :
➻ CSA of cone = πrl
➻ CSA of cone = 22/7 × 5 × 13
➻ CSA of cone = 204.2 cm²
Therefore, Curved Surface Area of cone is 204.2 cm².
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