A = 540 units squared.
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The rectangle has a length of 12 cm and a width of 3 cm.
Length is 11 and width is 7 and so 11 times 7 = 77 square cm
L = 5W 2L + 2W = 72 ==> L + W = 36 Substitute L = 5W: 5W + W = 6W = 36. ==> W = 6, and L = 30. Area = 180
perimeter = 2*width + 2*length 36= 2*8 +2*length2*length=36-162*length=20length = 10 cm
243 = 27 x 9 so perimeter is 2 x 36 ie 72.