Question:
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.
Solution:
False
Curved surface area of a hemisphere = 2 πr2
Here, two identical solid hemispheres of equal radius are stuck together. So, base of both hemispheres is
common.
∴ Total surface area of the combination
= 2 πr2 + 2 πr2 = 4π r2
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