The diameter of a roller 120cm long is 84cm
WebThe 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. ... Q. The diameter of a roller is 84cm and its length is 120cm. It take 500 complete revolutions to move once over to level a playground. Find the area of the playground in m×m. Q. WebSep 20, 2024 · This is the Solution of Question From RD SHARMA book of CLASS 9 CHAPTER SURFACE AREAS AND VOLUMES This Question is also available in R S AGGARWAL book of CLA...
The diameter of a roller 120cm long is 84cm
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WebThe diameter of a roller is 84 cm and its length is 120cm. It takes 500 complete revolution to move once over to level playground. Find the area of the playground in m2. View More Related Videos Surface Area of Solids MATHEMATICS Watch in App Explore more Curved Surface area of a right circular cylinder Standard IX Mathematics CBSE ICSE IAS JEE WebJun 18, 2024 · Best answer. 2r = 84cm. ∴ r = 84/2cm = 42cm. h = 120cm. Area of the playground leveled in one complete revolution = 2 π rh. = 2 × 22/7 × 42 × 120 × 31680cm 2. ∴ Area of the playground = 31680 × 500cm 2. = (31680 x 500)/ (100 x 100)m 2 = 1584m 2. ∴ Cost of leveling @ Rs 25 per square metre = Rs 1584 × 25 = 39600.
WebFeb 19, 2016 · Expert-Verified Answer. 9 people found it helpful. VineetaGara. Given, Diameter of a cylindrical roller = 84 cm. Length of the cylindrical roller = 120 cm. Number of complete revolutions made by the roller to level a playground = 500. The rate of cost of leveling = 30 paise/m^2. To find, WebApr 5, 2024 · The shape of the roller is a cylinder. So, we have to basically find the curved area of the cylinder which has diameter =84cm and length 120cm. Thus, the radius of cylinder will be: R = D 2 = 84 2 = 42 c m. Let us draw the cylinder to get a better view.
WebThe diameter of a road roller of length 120cm is 84cm . If it takes 500 complete ... #viralvideo crazy aalam parri 2.14K subscribers Subscribe Like Share No views 1 minute ago Show more... WebSolution Diameter of a roller =84 cm ∴ Radius =842=42 cm and height (h)=1.5 m=1.5×100 cm=150 cm [∵1 m=100 cm] ∴ Curved surface area of cylinder =2πrh =2×227×42×150cm2=39600 cm2 Area covered in 1 revolution = Curved surface area of the given cylinder ∴ Area covered in 100 revolutions. =39600×100=3960000 cm2 …
WebThe 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 m 2 ? [Assume .π=22/7]A. 1984 m 2B. 1584 m 2С. 2584 m 2D. 1534 m 2 facebook régi kinézet visszaállítása 2020WebNov 9, 2024 · Best answer Radius of the roller (r) = 84/ 2 cm = 42 cm Length of the roller (h) = 120 cm Curved surface area of the roller = 2πrh = 2 × 22/ 7 × 42 × 120 cm2 = 44 × 720 cm2 = 31680 cm2 ∴ area covered by the roller in 1 revolution = 31680 cm2 ∴ area covered by the roller in 500 revolutions = 31680 × 500 cm2 = 15840000 cm facebook regisztráció lépéseiWebMar 29, 2024 · Ex 13.2, 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. hipaa marketing ruleWebThe 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 m 2 Medium Solution Verified by Toppr Given: Height =120cm, R= 284=42 cm ⇒CSA=2πrh=2× 722×42×120cm 2=31680 cm 2 ⇒Area =500×CSA =500×31680 cm 2 facebook regisztráció telefonszám nélkülWebThe diameter of roller 1.5 m long is 84 cm. If it takes 100 revolutions to level a playground, find the cost of levelling this ground at the rate of 50 paise per square metre. ... The diameter of a roller 120 cm long is 84 cm. If it takes 500 complete revolutions to level a playground, dtermine the cost of levelling it at the rate of 30 paise ... hipaa minimum necessary standardWebThe 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. Solution: The roller is cylindrical in shape and hence it is considered as a right circular cylinder. hipaa phi minimum necessary standardWebMar 29, 2012 · the diameter of a roller is 84cm and its length is 120 cm.. it takes 500 complete revolutions to move once over to level a playground.find the area of the playgroundin m. Share with your friends 14 Follow 16 Nabhanyu Sharma, added an answer, on 29/3/12 Radius = d/2 = 84cm/2 = 42cm. Lateral surface area = 2*Pie*r*h = … facebook regisztráció korhatár