Answer:
23 ft 11 in
Step-by-step explanation:
The total height of the rack is the sum of the heights of the three sections. Units need to be converted to feet and inches.
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Height = bottom section height + middle section height + top section height
Height = 12 ft + (3 yd)(3 ft/yd) + (35 in)/(12 in/ft)
= 12 ft + 9 ft + 2 ft 11 in
= 23 ft 11 in
The entire metal rack was 23 feet and 11 inches tall.
