kll persegi panjang = 2(p+l)
210 = 2 ((8x+9)+(6x-2))
210 = 2 (14x+7)
210 = 28x+14
210-14 = 28x
196 = 28x
x = 7 m
Panjang = 8x+9
= 8.7+9
= 65 m
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kll persegi panjang = 2(p+l)
210 = 2 ((8x+9)+(6x-2))
210 = 2 (14x+7)
210 = 28x+14
210-14 = 28x
196 = 28x
x = 7 m
Panjang = 8x+9
= 8.7+9
= 65 m