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n=200 kali
s= 188,40 m
dit: Lp?
s=kel lingkaran x n
188,40 = kel x 200
kel lingkaran = 188,40 / 200 = 0,942 m= 94,2 cm
kel lingkaran = 3,14 x d
94,2 = 3,14 x d
d = 94,2 x 3,14
d= 295,8cm
r= 147,9 cm
luas = 3,14 x
luas= 68.680,07