if the volume in cm^3 and surface area in cm^2 of a sphere are numerically equal,then the radius of the sphere is
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4πr²=4/3πr³
r²=r³/3
3=r³/r²
3=r
r²=r³/3
3=r³/r²
3=r
Anonymous:
nice solve
thank u
Answered by
5
Let the radius of sphere be 'r' .
Given,
Surface area of sphere = volume of sphere 【 Numerically 】
( Substituting formulae )
hence
r= 3cm.
Given,
Surface area of sphere = volume of sphere 【 Numerically 】
( Substituting formulae )
hence
r= 3cm.
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hope this helps u
thank u in my exam i too used this same method i just want to check whether it is right or wrong
which school r u
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