The surface area of a solid metallic sphere is 1256 cm. sq. It is melted and recast into solid right circular cones of radius 2.5 cm and height 8 cm. Calculate the number of cones recast. (take π = 3.14)

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Solution

The correct option is E
80

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The surface area of a solid metallic sphere is $2464 c m^{2}$ . It is melted and recast into solid right circular cones of radius 3.5 cm and height 7 cm. Calculate the number of cones recast.

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The surface area of a solid metallic sphere is 1256 cm. sq. It is melted and recast into solid right circular cones of radius 2.5 cm and height 8 cm. Calculate the number of cones recast. (take π = 3.14)

The correct option is E 80

The correct option is E
80