((3.55)^2+(4.12)^2+(4.41)^2)/2(3.55 )*(4.12)

((3.55)^2+(4.12)^2+(4.41)^2)/2(3.55)*(4.12)

=358.519825

Step-by-step explanation:

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-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8