RD Sharma - Mathematics

Book: RD Sharma - Mathematics

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

Subject: Mathematics - Class 9th

Q. No. 9 of CCE - Formative Assessment

Listen NCERT Audio Books to boost your productivity and retention power by 2X.


The curved surface area of one cone is twice that of the other while the slant height of the latter is twice that of the former. The ratio of their radii is

We have,

A1 = 2 A2 ,

2l1 = l2 ,




Chapter Exercises

More Exercise Questions