Question 1136023
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Convert the given information into like units:<br>
16 inches is 16/12 = 4/3 feet.<br>
Area = length * width:<br>
21 = x(4/3)
x = (3/4)*21 = 63/4 = 15 3/4<br>
The required length is 15 3/4 feet, or 15 feet 9 inches.