RD Sharma - Mathematics

Book: RD Sharma - Mathematics

Chapter: 20. Surface Area and Volume of a Right Circular Cone

Subject: Mathematics - Class 9th

Q. No. 1 of Exercise 20.1

Listen NCERT Audio Books - Kitabein Ab Bolengi

1

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

Given,


Slant height of cone (r) = 60 cm


Radius of base of cone (l) = 21 cm


Curved surface area of cone = πrl = 22/7 × 21 × 60 = 3960 cm2


Chapter Exercises

More Exercise Questions