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Twenty seven solid iron spheres,each of …

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Twenty seven solid iron spheres,each of radius r and surface area s are melted to form a sphere with surface area S'. Find the ratio of s ans S' Its a NCERT question but in its solution you have used the formula of volume but the question is asking ratio of their surface area.

Posted by Vanshika Kandya 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Vansh Kukreja 5 years, 1 month ago

volume of 27 sphereV =volume of new sphere V' 27×V=V' : 3r=r'

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CBSE > Class 09 > Mathematics