Sadhana Bhadoriya

Ex – 9.3 Que No. 2 Q.2) Diameter of cylinder A is 7 cm, and the height is 14 cm. Diameter of cylinder B is 14 cm and height is 7 cm. Without doing any calculations can you suggest whose volume is greater? Verify it by finding the volume of both the cylinders. Check whether […]

Ex – 9.3 Que No. 1 Q.1) Given a cylindrical tank, in which situation will you find surface area and in which situation volume. Solution:-

Ex – 9.2 Que No. 10 Q.10) A company packages its milk powder in cylindrical container whose base has a diameter of 14 cm and height 20 cm. Company places a label around the surface of the container (as shown in the figure). If the label is placed 2 cm from top and bottom, what

Ex – 9.2 Que No. 9 Q.9) A road roller takes 750 complete revolutions to move once over to level a road. Find the area of the road if the diameter of a road roller is 84 cm and length is 1 m. Solution:-

Ex – 9.2 Que No. 8 Q.8) The lateral surface area of a hollow cylinder is 4224 cm2. It is cut along its height and formed a rectangular sheet of width 33 cm. Find the perimeter of rectangular sheet? Solution:-

Ex – 9.2 Que No. 7 Q.7) A closed cylindrical tank of radius 7 m and height 3 m is made from a sheet of metal. How much sheet of metal is required? Solution:-

Ex – 9.2 Que No. 6 Q.6) Describe how the two figures at the right are alike and how they are different. Which box has larger lateral surface area? Solution:-

Ex – 9.2 Que No. 5 Q.5) Daniel is painting the walls and ceiling of a cuboidal hall with length, breadth, and height of 15 m, 10 m and 7 m respectively. From each can of paint 100 m2 of area is painted. How many cans of paint will she need to paint the room?

Ex – 9.2 Que No. 4 Q.4) Rukhsar painted the outside of the cabinet ofmeasure 1 m × 2 m × 1.5 m. How much surface area did she cover if she painted all except the bottom of the cabinet. Solution:-

Ex – 9.2 Que No. 3 Q.3) Find the side of a cube whose surface area is 600 cm2. Solution:-