NCERT Solutions Class 9 Mathematics Solutions for Surface Areas and Volumes - Exercise 13.6 in Chapter 13 - Surface Areas and Volumes

Question 7 Surface Areas and Volumes - Exercise 13.6

A lead pencil consists of a cylinder of wood with a solid cylinder of graphite filled in the

interior. The diameter of the pencil is 7 mm and the diameter of the graphite is 1 mm. If the

length of the pencil is 14 cm, find the volume of the wood, and that of the graphite. (Assume π

= 22/7)

Answer:

NCERT Mathematics Solutions - Class 9 chapter Surface Areas and Volumes Question 7 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