Two spheres of same metal weigh 1kg and 7kg. The radius of the smaller sphere os 3cm. The two spheres are melted to form a single big sphere. Find the diameter of the new sphere. cbse- set3
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two sphere is made up of same metal so there density must be same
= mass/volumn
=1/volumn of small sphere
=1/36.22/7
=1/36.22/7 =7/x
x=7.36.22/7=36.22
x is the volumn of biger sphere
volumn of both the sphere=one big sphere
36.22/7+36.22
r^3=(36.22/7+36.22).3/4.7/22
r^3=249.136
r=6
d=6=6=12
= mass/volumn
=1/volumn of small sphere
=1/36.22/7
=1/36.22/7 =7/x
x=7.36.22/7=36.22
x is the volumn of biger sphere
volumn of both the sphere=one big sphere
36.22/7+36.22
r^3=(36.22/7+36.22).3/4.7/22
r^3=249.136
r=6
d=6=6=12
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