Explain what W21 × 68 means.

What will be an ideal response?


W means it is a wide-flange (I-shaped) section whose nominal depth is 21 in. and its nominal weight is 68 lb per ft. ("Nominal" means approximate, fairly close to the exact value)

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Which of these is not a type of skeletal system?

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What was President Nixon’s initial reaction to Watergate hearings in the Senate?

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5 + 3^2 =

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