Question

a metallic sphere of radius 10 .5 cm is melted and then recast into small cones each of radius 3.5 cm and height 3 cm the number of such cone is

Answer 1

1=1+2

Explanation:

2+2+3+7\

Answer 2

Explanation:

Number of cones = Volume of Sphere/Volume of one cone

Volume of sphere = (4/3)πr³

`=(4)/(3)\pi *10.5*10.5*10.5\\\\=4*\pi *3.5*10.5*10.5\\\\=1543.5\pi cubic cm`

Volume of cone= (1/3)πr²h

`=(1)/(3)*\pi *3.5*3.5*3\\\\=\pi *3.5*3.5\\\\=12.25\pi cubic cm`

Number of cones = 1543.5π / 12.25π

= 126 cones