Answers

2016-03-17T20:57:07+05:30
Volume of smaller sphere= 4/3(pie)r^3
total volume of cubes = 27*4/3(pie)r^3
total volume of spheres = volume of larger sphere
this gives radius of larger sphere = 6cm
surface area= 4(pie)r^2 = 452.57cm^2 (approx) 
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2016-03-17T20:58:43+05:30
Firs find the Total surface area of small sphere and multiply it by 27.
Then your answer will come 678.8. Now do it 2*22/7*r=678.8
r= 678.8*7/2*22 your answer will come r = 107.8cm. then find the TSA of new sphere with the radius 107.8cm
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