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Step-by-step explanation:
A) l=4 b=3
perimeter= 2(l+b)
= 2(4+3)= 2(7)= 14cm
B) perimeter=4(s) =4(3)12cm
area= s(s)= 3(3) =cm²
C) perimeter= 2(l+b)=110
=2(30+b)=110
=60+2b=110
2b= 110-60
2b=50
b=50/2= 25cm
D) perimeter=2(l+b)
=2(20+12)
=2(32)
=64cm
area=l(b)
=20*12
=240cm²
E)
F) perimeter=2(l+b)=44
=2(l+11)=44
=2l+22=44
=2l=44-22
=2l=22
l=22/2
l=11cm
area=s×s
=11*11
=121cm²
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