Question

Find the height of a right circular cone which is formed by melting a solid cylinder 3.5m high and 2m in radius given that the radius of the base of the cone is equal to the radius of the cylinder.
A) 5.5 m
B) 7.5 m
C) 10.5 m
D) 10 m

Answer 1

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Given that a solid sphere of radius =8 cm

With this sphere, we have to make spherical balls = 1 cm

Since we don’t know number of balls let us assume that number of balls be n

We know that,

Volume of the sphere = 43∏r3

The volume of the solid sphere equal to sum of the n spherical balls.

= n(43∏13)= 43∏r3

= n= 8³ =n= 512

Hence 512 numbers of balls can be made of radius 1 cm of a solid sphere of radius 7.5cm.

Answer 2

answer:− 

it's Given that solid sphere radius is =8 cm

With this sphere, we have to make spherical balls = 1 cm

Since we don’t know no. of balls let us assume that number of balls be n

Volume of the sphere = 4/3∏r3

The volume of the solid sphere equal to sum of the n spherical balls.

= n(4/3∏13)= 4/3∏r3

= n= 8³ =n= 512

Hence 512 numbers of balls can be made of radius 1 cm of a solid sphere of radius 7.5cm.