Write ‘True’ or ‘False’ and justify your answer. Two identical solid hemispheres of equal base radius r cm are stuck together along
their bases. The total surface area of the combination is 6πr2.

NCERT Class X
Mathematics - Exemplar Problems

Chapter _SURFACE AREAS AND VOLUMES

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Answers

2015-06-09T20:35:24+05:30
Surface area of upper hemisphere = 3πr2

Surface area of lower hemisphere = 3πr2
But surface area of bases will not be considered as they are stuck and their bases cannot be seen

So total surface area of the combination = 3πr2 + 3πr2 = 6πr2 
So, the above statement is true
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