Jawabanmu

2014-05-30T17:52:22+07:00
Jawaban paling cerdas!
2014-05-30T18:23:44+07:00
Kan berarti kita cari Luas juring dulu.
Lj = luas lingkaran × sudut juring / 360
Lj = (22/7 × 28 × 28 =1.232) × 90/360
Lj = 2.464 ×1/4 = 616 cm²
Luas Tembereng = Lj - Luas segitiga
Luas segitiga = 1/2 × 28 × 28 =392
Lt = Lj -Ls
Lt = 616 - 392 = 224 cm²

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