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2014-05-29T15:17:32+03:00
P = 2L + 2l
L = l + 4.8
127 = 2(l + 4.8) + 2l
127 = 2l + 9.6 + 2l
127 = 4l + 9.6
127 - 9.6 = 4l
117.4 = 4l
l = 117.4/4
l = 29.35
L = 29.35 + 4.8
L = 34.15
A = L * l
A = 34.15 * 29.35
A = 1002.3025m^2
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