math
posted by manny .
can you guys check if this is correct?
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"the cross sectional area of a circular duct is 226.865 square inches. what would be the diameter of the duct"
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A= pi(r^2) = 226.865 in^2
r= sqrt [ 226.865/ pi ]
r = 8.497845
d = 2r
= 17
the diameter is 17 inches
Right. I get 17 inches also.
ok thanks
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