10th standard maths| chapter 7| Mensuration|Example 7.9|TN samacheer

Описание: In this video we have to see 10th standard maths
Chapter 7 Mensuration example 7.9

The radius of a spherical balloon increases from 12cm to 16cm as air being pumped into it. find the ratio of the surface area of the balloons in the two cases.


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