K lingkaran : 2.phi.r
314 : 2 . 3,14 . r
314 : 6,28 . r
r : 314/6,28
r : 50 cm
L lingkaran : phi .r.r
: 3,14 . 50 .50
: 7850 cm(2)
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K lingkaran : 2.phi.r
314 : 2 . 3,14 . r
314 : 6,28 . r
r : 314/6,28
r : 50 cm
L lingkaran : phi .r.r
: 3,14 . 50 .50
: 7850 cm(2)
semoga membantu