Question

Q. 2 A big sphere is made by melting down 64 small spheres each of radius
2cm. find the radius of the big sphere.​

Answer 1

Answer:

The concept of time is self-evident. An hour consists of a certain number of minutes, a day of hours and a year of days. ... Time is represented through change, such as the circular motion of the moon around Earth. The passing of time is indeed closely connected to the concept of space.

Step-by-step explanation:

Answer 2

Answer:

Let R be the radius of big sphere.

General formula for volume of sphere=4/3nrsq3.

if we reshape a solid object then the volume will always remain constant no matter what shape you choose.

so, the volume of big sphere = total volume of 64 spheres.

=> 4/3n(R)sq3 = 64*4/3n(2)sq3

//4/3n on both sides strike out.

=> Rsq3 = 64*8

=> R = sqroot3 512 = 8cm.

thus the radius of big sphere is 8cm.