Namber 2 plis .belajar uass

a) K =28
2p + 2l. =28
2(x+5)+2(x+1) = 28
(2x+10)+(2x+2) =28
b)4x+12 =28
4x= 28-12
4x=16
x=4
c)Luas = pxl
=(x+5)x(x+1)
=(4+5)x(4+1)
=9x5
=45
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