3.5+2.5+3.5+2.5=12cm
the perimeter is 12
12 cm
Use the perimeter formula vv
P = 2a + 2b
plug in the numbers
a= 3.5 cm
b= 2.5 cm
P= 2(3.5) + 2(2.5)
And that will give you the answer 12 cm.
Hope this helps!
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