Actual dimensions of the rectangular stamp is Length = 3.5cm and Width = 4.9cm
perimeter of a rectangle is the sum of the dimensions. This is the sum of the 2 lengths and the 2 widths
Given data
width of a rectangular stamp ( W ) = 1.40cm + L
L = length
perimeter of stamp after increment = 20.8cm
Perimeter p = 2 ( L + W )
20.8 = 2 ( L + 1 + W + 1 )
20.8 = 2 ( L + 1 + 1.4+ L + 1 )
20.8 = 2 ( 2L + 3.4 )
10.4 = ( 2L + 3.4 )
2L = 10.4 - 3.4
L = 7 / 2
L = 3.5cm
Therefore length of the stamp is 3.5 cm
Width of the stamp = 1.4 + L
W = 1.4 + 3.5
W = 4.9 cm
Actual dimensions of the rectangular stamp is Length = 3.5cm and Width = 4.9cm
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