RD Sharma Solutions Class 7 Visualising Solid Shapes Exercise 19.1

RD Sharma Solutions Class 7 Chapter 19 Exercise 19.1

RD Sharma Class 7 Solutions Chapter 19 Ex 19.1 PDF Free Download

Exercise 19.1

Q1: Complete the following table and verify Euler’s formula in each case.

1

A1:

2

Hence Euler’s formula is verified for these figures.

 

 

Q2: Give three examples from our daily life which are in the form of

(i) a cone

(ii) a sphere

(iii) a cuboid

(iv) a cylinder

(v) a pyramid.

A2: 

Examples of

(i) Cone: Ice-cream cone, clown cap, rocket

(ii) Sphere: Football, a round apple, an orange

(iii) Cuboid: book, brick, duster

(iv) Cylinder : circular pipe, glass, circular pole

(v) Christmas decorations, cheese and patio umbrellas.


Practise This Question

State whether true or false.

43>0