Part (a)
4, read it off the diagram.
Part (b)
(4 in)(1 ft/12 in) = 1/3 ft
Part (c)
(60 ft)(20 ft)(1/3 ft)=400 cu ft
Part (d)
(66 ft)(26 ft)(1/3 ft)=572 cu ft
Part (e)
572 cu ft - 400 cu ft = 172 cu ft
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