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Question 9: Find the lateral or curved surface area of a closed cylindrical petrol storage tank that is 4.2 m in diameter and 4.5 m high. how much steel was actually used, if 1/12 of the steel actually used was…
Read MoreQuestion 8: In a hot water heating system, there is a cylindrical pipe of length 28 m and diameter 5 cm. Find the total radiating surface in the system. Question 7 Question 9 Prerequisite
Read MoreQuestion 7: The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find its inner curved surface area, the cost of plastering this curved surface at the rate of Rs. 40 per m2. Question 6…
Read MoreQuestion 6: Curved surface area of a right circular cylinder is 4.4 m2. If the radius of the base of the cylinder is 0.7 m, find its height. Question 5 Question 7 Prerequisite
Read MoreQuestion 5: A cylindrical pillar is 50 cm in diameter and 3.5 m in height. Find the cost of painting the curved surface of the pillar at the rate of ` 12.50 per m2. Question 4 Question 6 Prerequisite
Read MoreQuestion 4: The diameter of a roller is 84 cm and its length is 120 cm. It takes 500 complete revolutions to move once over to level a playground. Find the area of the playground in m2. Question 3 Question…
Read MoreQuestion 3: A metal pipe is 77 cm long. The inner diameter of a cross section is 4 cm, the outer diameter being 4.4 cm (see Fig. 13.11). Find its inner curved surface area, outer curved surface area, total surface…
Read MoreQuestion 2: It is required to make a closed cylindrical tank of height 1 m and base diameter 140 cm from a metal sheet. How many square metres of the sheet are required for the same? Question 1 Question 3…
Read MoreQuestion 1: The curved surface area of a right circular cylinder of height 14 cm is 88 cm². Find the diameter of the base of the cylinder. Ex: 13.1 | Question 8 Question 2 Prerequisite
Read MoreExample 3: Savitri had to make a model of a cylindrical kaleidoscope for her science project. She wanted to use chart paper to make the curved surface of the kaleidoscope. (see Fig 13.10). What would be the area of chart…
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