panjang = xlebar = x - 3Keliling = 262(p + l) = 26p + l = 26 / 2p + l = 13x + x - 3 = 132x - 3 = 132x = 13 + 32x = 16x = 16/2x = 8 cmpanjang = x = 8 cmlebar = x - 3 = 8 - 3 = 5 cmLuas= panjang x lebar= 8 cm x 5 cm= 40 cm²Jawaban E
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panjang = x
lebar = x - 3
Keliling = 26
2(p + l) = 26
p + l = 26 / 2
p + l = 13
x + x - 3 = 13
2x - 3 = 13
2x = 13 + 3
2x = 16
x = 16/2
x = 8 cm
panjang = x = 8 cm
lebar = x - 3 = 8 - 3 = 5 cm
Luas
= panjang x lebar
= 8 cm x 5 cm
= 40 cm²
Jawaban E