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Solution for Find the Curved Surface Area of a Cone, If Its Slant Height is 60 Cm and the Radius of Its Base Is 21 Cm. - CBSE Class 9 - Mathematics

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Question

Find the curved surface area of a cone, if its slant height is 60 cm and the radius of its base is 21 cm.  

Solution

Given that
Radius of its base is 21cm
Slant height= 60cm  

WKT, Curved surface area of a cone =`pirl` 

∴ Curved surface area=`22/7xx21xx60` 

=`3960cm^2` 

  Is there an error in this question or solution?

APPEARS IN

 R.D. Sharma Mathematics for Class 9 by R D Sharma (2018-19 Session) (with solutions)
Chapter 18: Surface Areas and Volume of a Cuboid and Cube
Q: 1
Solution for question: Find the Curved Surface Area of a Cone, If Its Slant Height is 60 Cm and the Radius of Its Base Is 21 Cm. concept: Surface Area of a Right Circular Cone. For the course CBSE
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