A reinforced concrete beam measures 12 in. × 24 in. in cross section. If the density of reinforced concrete is 1 50 lb/ft3, the weight of the beam is

A) 300 lb/ft3.
B) 450 lb/ft.
C) 300 lb.
D) 300 lb/ft.
E) 350 lb/ft.


D) 300 lb/ft.

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Answer the following statement true (T) or false (F)

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