In this chapter, we provide RD Sharma Class 7 ex 19.1 Solutions Chapter 19 Visualising Solid Shapes for English medium students, Which will very helpful for every student in their exams. Students can download the latest RD Sharma Class 7 ex 19.1 Solutions Chapter 19 Visualising Solid Shapes Maths pdf, Now you will get step by step solution to each question.
| Textbook | NCERT |
| Class | Class 7 |
| Subject | Maths |
| Chapter | Chapter 19 |
| Chapter Name | Visualising Solid Shapes |
| Exercise | Ex 19.1 |
RD Sharma Solutions for Class 7 Chapter 19 Visualising Solid Shapes Ex 19.1 Download PDF
Visualising Solid Shapes Exercise 19.1
Question: 1
Complete the following table and verify Euler’s formula in each case.
 | ||||
| Face (F) | 6 | 4 | ||
| Edge (E) | 12 | |||
| Vertex (V) | 8 | 4 |
Solution:
| I | II | III | IV | |
| Face (F) | 6 | 4 | 9 | 7 |
| Edge | 12 | 8 | 16 | 15 |
| Vertex (V) | 8 | 4 | 9 | 10 |
| Euler’s Formula (F – E + V) | 6 – 12 + 8 =2 | 4 – 6 + 4 = 2 | 9 – 16 + 9 = 2 | 7 – 15 + 10 = 2 |
Hence Euler’s formula is verified for these figures.
Question: 2
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.
Solution:
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.
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