NCERT Solutions for Class 9 Maths Chapter 13

Important NCERT Questions

Surface Areas and Volumes

NCERT Books for Session 2022-2023

CBSE Board, UP Board and Other state Boards

EXERCISE 13.3

Page No:221

Questions No:1

# Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved surface area.

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Radius of cone r = 10.5/2 = 5.25 cm and slant height l = 10 cm

Curved surface area of cone = πrl

= 22/7 × 5.25 × 10

= 22 × 0.75 × 10

= 165 cm²

Hence, the curved surface area of cone is 165 cm².

Get here all the solutions of class 9 Maths Exercise 11.1 Question 1

https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-11/

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