Lateral surface area of cylinder: The curved surface joining the two bases of a right circular cylinder is called its lateral surface.
The lateral surface area of cylinder =
Illustration: The curved surface area of a right circular cylinder of height 14 cm is . Find the diameter of the base of the cylinder.
Solution: Let r be the radius and h be the height of the cylinder.
Then,
then r = 1 cm
Diameter of cylinder = 2 cm
Illustration: The diameter of a roller 120 cm long is 84 cm. If it takes 500 complete revolutions to level a playground, determine the cost of levelling it at the rate of 30 paise per square meter .
Solution: Clearly, the roller is a right circular cylinder of height h = 120 cm and radius of its base = r = 42 cm
So, area covered by the roller in one revolution = Curved surface area of the roller
So, area covered by the roller is 500 revolutions
Hence, the cost of levelling the playground =
The number of surfaces in right cylinder is _________________ | |||
Right Option : C | |||
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The radius of two right circular cylinders are in the ratio 2:3 and their heights are in the ratio 5:4. Calculate the ratio of their curved surface areas. | |||
Right Option : C | |||
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A cylindrical pillar is 50 cm in diameter and 3.5 m in height. Find the cost of painting the pillar at the rate of 12.50 per sq m. | |||
Right Option : C | |||
View Explanation |
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Abhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
It was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
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Abhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
It was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
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In terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
Usually we see institutes offering objective based learning which usually causes a lag behind in subjective examinations which is the pattern followed by schools. I think it is really a work of planning to make us students grab the advantages of modes of examination, Objective Subjective and Onli...
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