cuboid

31 Oct

Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.1 | Question 2

Class 9 - Surface areas and Volumes, Math - Class 9 | NCERTClass 9 math tutorials, cube, cuboid, math, mathemafia, mathematics, NCERT, surface area, surface area of cube and cuboid

Question 2: The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost of white washing the walls of the room and the ceiling at the rate of Rs. 7.50 per…

Read More

31 Oct

Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.1 | Question 1

Class 9 - Surface areas and Volumes, Math - Class 9 | NCERTClass 9 math tutorials, cube, cuboid, math, mathemafia, mathematics, NCERT, surface area, surface area of cube and cuboid

Question 1: A plastic box 1.5 m long, 1.25 m wide and 65 cm deep is to be made. It is opened at the top. Ignoring the thickness of the plastic sheet, determine: (i) The area of the sheet required…

Read More

31 Oct

Class 9 | Chapter 13 | Surface areas and Volumes | Example 2

Class 9 - Surface areas and Volumes, Math - Class 9 | NCERTClass 9 math tutorials, cube, cuboid, math, mathemafia, mathematics, NCERT, surface area, surface area of cube and cuboid

Example 2: Hameed has built a cubical water tank with lid for his house, with each outer edge 1.5 m long. He gets the outer surface of the tank excluding the base, covered with square tiles of side 25 cm…

Read More

31 Oct

Class 9 | Chapter 13 | Surface areas and Volumes | Example 1

Class 9 - Surface areas and Volumes, Math - Class 9 | NCERTClass 9 math tutorials, cube, cuboid, math, mathemafia, mathematics, NCERT, surface area, surface area of cube and cuboid

Example 1: Mary wants to decorate her Christmas tree. She wants to place the tree on a wooden box covered with coloured paper with picture of Santa Claus on it (see Fig. 13.4). She must know the exact quantity of…

Read More