What is the geometric mean of two heat transfer areas A1 and A2 ?

1.	What is the geometric mean of two heat transfer areas A1 and A2 ?
A.	A1 . A2
B.	A1 + A2
C.	A1 . A2
D.	2 A1 . A2
Answer» B. A1 + A2

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What is the geometric mean of two heat transfer areas A1 and A2 ?

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