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This question is from the chapter surface areas and volumes : QUESTION : A right circular cylinder just encloses a sphere of radius R find: i)surface area of thr sphere ii)curved surface area of the cylinder iii)ratio of the areas obtained in (i) and (ii)
  • 2 answers

Kusum Painuly 5 years, 4 months ago

Radius of sphere = r Surface area of sphere = 4πrsqare So we get the answer 4πr square Curved surface area of cylinder = 2πrh Height u can see the figure that height is twice of radius So height = r+r=2r Curved suface area = 2π r(2r) = 4π r sqare Ratio = 1:1

Sneha Pant 5 years, 4 months ago

Please answer fast ??
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