Luas juring = alpha/360° x Π x r²
» Luas juring besar
Ljb = 144°/360° x Π x 13²
Ljb = 67,6 Π
» Luas juring kecil
Ljk = 144°/360° x Π x 12²
Ljk = 57,6 Π
» Luas yang diarsir
Luas arsir = Ljb - Ljk
Luas arsir = 67,6 Π - 57,6 Π
Luas arsir = 10Π C
Maaf bila ada kesalahan
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Luas juring = alpha/360° x Π x r²
» Luas juring besar
Ljb = 144°/360° x Π x 13²
Ljb = 67,6 Π
» Luas juring kecil
Ljk = 144°/360° x Π x 12²
Ljk = 57,6 Π
» Luas yang diarsir
Luas arsir = Ljb - Ljk
Luas arsir = 67,6 Π - 57,6 Π
Luas arsir = 10Π C
Maaf bila ada kesalahan