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Verified answer
Kelas 9 MatematikaBab Akar dan Pangkat
Luas
= p . l
= (5 + 2√2) . (15 + 2√2)
= 75 + 10√2 + 30√2 + 4 . 2
= 75 + 40√2 + 8
= (83 + 40√2) cm²