Answer
$$1260\ ft^2 .$$
Work Step by Step
Since $1\ yd = 3\ ft$, then we have
$$140\ yd^2 =140\times 3^2 \ ft^2 = 1260\ ft^2 .$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 3 - Section 3.7 - Metric and U.S. Conversion - Exercise - Page 155: 25
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