Question

27 metal balls of radius r are melted together to form a big sphere of radius R find R:r

Answer 1

Answer:

729/1

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

vol. of big sphere = vol. of 27 small sphere

4/3pi r cube=27x4/3 pi R cube

cancelling pi and 4/3 from equations we get

r cube =27xRcube

Rcube/rcube= 27/1

Therefore, R/r = 3/1