9/x = x/225 x2 = 2,025 x = 45
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8.48528
8.48528
10.3923048454
Their geometric mean is:sqrt(42*(1/9)2)=sqrt(16*(1/81))=sqrt(16/81)=4/9-------------------The geometric mean of a set of n terms is equal to the nth root of the product of those n terms. The geometric mean of 4 and 1/9 is sqrt(4*(1/9)) = sqrt(4/9) = 2/3.
MEAN = ( 8+10 )/2 = 18/2 =9