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L=π x r²
«616»=3.14 x r²
»r² =616/3.14
»r² =196,18
»r. =√196.18
»r. =4.46
jadi jaring jaring lingkaran nya adalah 4.46
semngat sumpah pemuda
π.r^2 = 616 cm^2
22/7.r^2 = 616 cm^2
r^2 = 7/22(616 cm^2)
r^2 = 196
r = √196 cm^2
r = 14 cm