NCERT Solutions Class 9 Mathematics Solutions for Surface Areas and Volumes - Exercise 13.4 in Chapter 13 - Surface Areas and Volumes

Question 9 Surface Areas and Volumes - Exercise 13.4

A right circular cylinder just encloses a sphere of radius r (see fig. 13.22). Find

(i) the surface area of the sphere,

(ii) the curved surface area of the cylinder,

(iii) the ratio of the areas obtained in (i) and (ii).

Question 9 Image - NCERT Mathematics Solutions - Class 9 chapter Surface Areas and Volumes

Answer:

NCERT Mathematics Solutions - Class 9 chapter Surface Areas and Volumes Question 9 Solution image

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Exercises

Surface Areas and Volumes - Exercise 13.1

Surface Areas and Volumes - Exercise 13.2

Surface Areas and Volumes - Exercise 13.3

Surface Areas and Volumes - Exercise 13.4

Surface Areas and Volumes - Exercise 13.5

Surface Areas and Volumes - Exercise 13.6

Surface Areas and Volumes - Exercise 13.7

Surface Areas and Volumes - Exercise 13.8

Surface Areas and Volumes - Exercise 13.9

Chapters

Number System

Polynomials

Coordinate Geometry

Linear Equations in Two Variables

Introduction to Euclids Geometry

Lines and Angles

Triangles

Quadrilaterals

Areas of Parallelograms and Triangles

Circles

Constructions

Heron’s Formula

Surface Areas and Volumes

Statistics

Probability