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The radius of a hemisphere balloon …

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The radius of a hemisphere balloon increase from 6cm to 12cm as air is being pumped into it. The ratio of the surface areas of the balloon in the two cases is

Posted by Kavin M 2 years ago

CBSE > Class 09 > Mathematics

2 answers

Sheetal Gupta 1 year, 11 months ago

Curved surface area of small hemisphere/Curved surface area of big hemisphere 2πrh/2πrh (2sa2andπsaπandhsah cut jayga) Small hemisphere=6 Big hemisphere=12 6/12 Ratio=1:2

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Lalit Chand Prajapati 2 years ago

Hjfy

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CBSE > Class 09 > Mathematics