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Verified answer
Mapel : MatematikaKelas : 8/VIII
Bab : Lingkaran
Sub bab : -
No. 8)
a)
LjOEF = x°/360° × L⚪
Lj OEF = 90°/360° × 22/7 × 7²
Lj OEF = 1/4 × 22/7 × 49
Lj OEF = 1/4 × 154
Lj OEF = 38,5 cm
b)
Luas segitiga OEF = a × t : 2
Luas segitiga OEF = 7 × 7 : 2
Luas segitiga OEF = 24,5 cm
c)
Luas tembereng = Lj OEF - L segitiga OEF
Luas tembereng = 38,5 - 24,5
Luas tembereng = 14 cm
Maaf cuma bisa yang nomor 8
Smga membantu :)