A cylindrical pillar of radius 14 cm and height 35 cm is melted at a foundry in Pune and recast into solid spheres of radius 7 cm.
How many spheres are formed? (use π = $\frac{22}{7}$ )

Question

A cylindrical pillar of radius 14 cm and height 35 cm is melted at a foundry in Pune and recast into solid spheres of radius 7 cm. How many spheres are formed? (use π = 22/7)

Accepted Answer

15. Cylinder V = π*14^2*35 = π*196*35 = 6860 π. Sphere V = 4/3π*7^3 = 4/3π*343 = 457.33 π. n = 6860/457.33 = 15 spheres.

A cylindrical pillar of radius 14 cm and height 35 cm is melted at a foundry in Pune and recast into solid spheres of radius 7 cm.
How many spheres are formed? (use π = $\frac{22}{7}$ )

Step-by-Step Solution

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More Class 10 Conversion of Solids practice

A cylindrical pillar of radius 14 cm and height 35 cm is melted at a foundry in Pune and recast into solid spheres of radius 7 cm.How many spheres are formed? (use π = 722​)

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 Conversion of Solids practice

A cylindrical pillar of radius 14 cm and height 35 cm is melted at a foundry in Pune and recast into solid spheres of radius 7 cm.
How many spheres are formed? (use π = $\frac{22}{7}$ )