Respuesta :

Moonnose
P=2(a+b)
54=2(16+b)
54=32+2b
22=2b
11=b

The width is 11cm.

Just say if you need a better explanation.
abbigator01
w= 27/8 (3 3/8 as a mixed number) or if you would like to write it as a decimal w=3.375 

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