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= 22/7 x 14²
= 22/7 x 196
= 616 cm²
LUas juring = a/360 x luas lingkaran
= 60/360 x 616
= 102,7 cm²
b). keliling lingkaran = πd
= 22/7 x 28
= 88 cm
Panjang busur = a/360 x keliling lingkaran
= 60/360 x 88
= 14,7 cm