RS Aggarwal Solutions for Class 8 Maths Chapter 19 Exercise 19.1: Here, we present the RS Aggarwal Solutions for Class 8 Maths Chapter 19 Exercise 19.1 on Three Dimensional Figures. This exercise focuses on understanding and solving problems related to various three-dimensional shapes, such as cubes, cuboids, and cylinders.
It helps students grasp the concepts of volume and surface area which are important for analyzing and working with 3D objects. The solutions provided step-by-step guidance to simplify complex problems making it easier for students to master these concepts. By working through Exercise 19.1, students will enhance their spatial reasoning skills and improve their ability to calculate and visualize three-dimensional figures accurately.RS Aggarwal Solutions for Class 8 Maths Chapter 19 Exercise 19.1 Three Dimensional Figures PDF
(Question 1) Write down the number of faces of each of the following figures:
(i) Cuboid = 6 faces (ii) Cube = 6 faces (iii) Triangular prism = 5 faces (2 triangular and 3 rectangular) (iv) Square pyramid = 5 faces (1 sq. faces and 4 triangular faces) (v) Tetrahedron = 4 triangular facesSolution:
(Question 2) Write down the number of edges of each of the following figures:
(i) Tetrahedron = 6 edges (ii) Rectangular pyramid = 8 edges (iii) Cube = 12 edges (iv) Triangular prism = 9 edgesSolution:
(Question 3) Write down the number of vertices of each of the following figures:
(i) Cuboid = 8 vertices (ii) Square pyramid = 5 vertices (iii) Tetrahedron = 4 vertices (iv) Triangular prism = 6 vertices(Question 4) Fill in the blanks:
Solution:
(i) A cube has 8 vertices, 12 edges and 6 . (ii) The point at which three faces of a figure meet is known as its vertex . (iii) A cuboid is also known as a rectangular cube . (iv) A triangular pyramid is called a tetrahedron .