A Common Rectangular House Duct Is $6$ In $\times 20$ In If the Length of the Duct Is

Multiple Choice

A common rectangular house duct is $6$ in. $\times 20$ in. If the length of the duct is $68$ in. what is its volume?

A) 7,552 in. ³
B) 8,160 in. ³
C) 3,776 in. ³
D) 4,440 in. ³
E) 376 in. ³