The ratio of the base radii of two right circular cylinder is 1

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 Multiple Choice QuestionsMultiple Choice Questions

251. The volume and curved surface area of a sphere are numerically equal. The radius of the sphere is
  • 1 third space cm
  • 3 cm
  • 4 cm 
  • 4 cm 
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252. The base radii of the two cones are the same but their volumes are 4π m3 and 9π m3respectively. The ratio of their heights is
  • square root of 2 space colon square root of 3
  • 2 : 3
  • 4 : 9   
  • 4 : 9   
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253. The ratio of the base radii of two right circular cylinders is 1 : 2. If the ratio of their heights is 5 : 3, then the ratio of their volumes is
  • 5 : 12 
  • 5 : 7

  • 7 : 5
  • 7 : 5
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254.

The ratio of the base radii of two right circular cylinder is 1 : 2 and the ratio of the corresponding heights is 2 : 1. The ratio of their volumes is

 

 

  • 1 : 4

  • 1 : 2

  • 2 : 3 

  • 2 : 3 


B.

1 : 2

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255. The number of edges of a cube are
  • 8
  • 12
  • 12
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256. The curved surface area of a sphere is 36π cm2. The volume of the sphere is
  • 36π cm3
  • 6π cm3
  • 36 cm3
  • 36 cm3
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257. The ratio of the whole surface area of a solid sphere and a solid hemisphere is
  • 4 : 3 
  • 2 :3
  • 2 :3
  • 2 :3
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258. The radius of largest sphere that is carved out of a cube of side 7 cm is:
  • 7 cm 
  • 3.5 cm
  • 14 cm  

  • 14 cm  

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259. The total surface area of a cone of radius ‘2r’ and slant height apostrophe 1 half apostrophe is:
  • 2straight pir (l + r)
  • πr open parentheses straight l plus straight r over 4 close parentheses
  • straight pir (4 r + l)
  • straight pir (4 r + l)
452 Views

260.  In a cylinder, radius is doubled and height is halved, curved surface area will be:
  • halved 
  • doubled
  • same 
  • same 
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