27 solid iron spheres each of radius 2 centimetre are melted to form a new sphere.what will be the surface area of the new sphere?
Answers
Answered by
1
Step-by-step explanation:
Tsa of 27small spheres=4πr×r×27
= (88×4×27)÷7
=1357.71 cm sq
Answered by
4
Answer:
452.57cm^2 (approx)
Step-by-step explanation:
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 (appro)
Similar questions