5. A right circular cylinder just encloses a sphere of radius r find
a. Surface area of sphere
b. Curved surface area of

1 thought on “5. A right circular cylinder just encloses a sphere of radius r find<br />a. Surface area of sphere<br />b. Curved surface area of”

1. Answer:

   (i) SA of sphere =4πr

   2

   (ii) Height =r+r=2r

   radius =r

   ⇒Curved Surface Area=2πrh=2πr(2r)=4πr

   2

   (iii) Ratio =

   4πr

   2

   4πr

   2

   =

   1

   1

   or 1:1

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