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Verified answer
Kelas 8 MatematikaBab Bangun Datar
AD = √(AE² + ED²)
AD = √(15² + 8²)
AD = √(225 + 64)
AD = √(289)
AD = 17 cm
Panjang alas segitiga pada trapesium
= √(5² - 4²)
= √(25 - 16)
= √9
= 3 cm
BC = 17 - 3 - 3
BC = 11 cm
Keliling = 15 + 8 + 11 + (2 . 5)
Keliling = 34 + 10
Keliling = 44 cm
✩✩ B ✩✩