The perimeter of a rectangular park having length 5 1/4 m is 17 1/2 m find the are
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we have :
L = 5 1/4 ==> 2L = 10 1/2
and
P = 2 * width + 2L = 17 1/2
therefore
2 * width = 17 1/2 - 2L
2 * width = 17 1/2 - 10 1/2
2 * width = 7
and so
width = 3 1/2
finally
Area = L * width
= 5 1/4 * 3 1/2
= 21/4 * 7/2
= 147/8 m^2
= 18 3/8 m^2
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