Answer
18 ft 4 inches
Work Step by Step
4 ft 7 inches x 4 = 16 ft 28 inches = 18 ft 4 inches
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.