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Luas Juring = sudut pusat/360 x Luas lingkaran
Rumus : L(lingkaran) x sudut juring / 360
2. Cara menentukan Panjang busur
Rumus : K(lingkaran) x sudut juring / 360
3. Cara menentukan Tembereng
Rumus : L(juring) - L(segitiga)*