Question

Spear of radius 5 cm is melted and recast into a sphere of radius 2 cm is how many spheres can be made

Answer 1

Answer:

15.625 spheres

Step-by-step explanation:

hope you understand

Answer 2

15 spheres can be made

Step-by-step explanation:

Radius of large sphere = 5 cm

Volume of sphere = $\frac{4}{3} \pi r^3$

Volume of large sphere = $\frac{4}{3} \times \frac{22}{7} \times 5^3$

Radius of small sphere

Volume of small sphere = $\frac{4}{3} \times \frac{22}{7} \times 2^3$

No. of spheres formed = $\frac{\frac{4}{3} \times \frac{22}{7} \times 5^3}{\frac{4}{3} \times \frac{22}{7} \times 2^3}=15.62$

Hence 15 spheres can be made

#Learn more:

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