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Verified answer
Kelas 7 MatematikaBab Aljabar
Kata Kunci : Persegi Panjang
p = 9 + l
Keliling = 74
2 . (p + l) = 74
9 + l + l = 74/2
2l = 37 - 9
l = 28/2
l = 14 cm
p = 9 + l
p = 9 + 14
p = 23 cm
Luas = p . l
Luas = 23 . 14
Luas = 322 cm²