9. A right circular cylinder just encloses a sphere of radius r (see fig. 13.22). Find (i) surface area of the sphere

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9. A right circular cylinder just encloses a sphere of radius r (see fig. 13.22). Find (i) surface area of the sphere, (ii) curved surface area of the cylinder, (iii) ratio of the areas obtained in(i) and (ii).
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Oct
9. A right circular cylinder just encloses a sphere of radius r (see fig. 13.22). Find (i) surface area of the sphere, (ii) curved surface area of the cylinder, (iii) ratio of the areas obtained in(i) and (ii). (ii) curved surface area of the cylinder (iii) ratio of the areas obtained in(i) and (ii). 9. [...]
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