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Verified answer
Lingkaran , Kelas 82.
Kell = 2πr
= 2(22/7)(7)
= 44 cm
pjg busur
= 60°/360° x 44
= 1/6 x 44
≈ 7,3 cm
B
3)
Luas lkr = πr²
= (22/7)(7)(7)
= 154 cm²
Luas juring
= 60°/360° x 154
= 1/6 x 154
≈ 25,6 cm²
jawab B