22 = 60/360 . 2πr
22 = 1/6 . 2πr
22 = 1/3 πr
πr = 66 <= π = 22/7
22/7 . r = 66
1/7 r = 3
r = 21 cm
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22 = 60/360 . 2πr
22 = 1/6 . 2πr
22 = 1/3 πr
πr = 66 <= π = 22/7
22/7 . r = 66
1/7 r = 3
r = 21 cm