2000 AMC 8 竞赛试题/第16题
Problem
In order for Mateen to walk a kilometer (1000m) in his rectangular backyard, he must walk the length 25 times or walk its perimeter 10 times. What is the area of Mateen's backyard in square meters?
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Solution
The length
of the rectangle is
meters. The perimeter
is
meters. Since
, we plug values in to get:
![]()
![]()
![]()
meters
Since
, the area is
square meters or
.
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