[tex]keliling \: \frac{1}{4} \: lingkaran \\ \\ \frac{25}{7} \times r \\ 25/7×35cm \\ 125 \: cm[/tex]
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[tex]keliling \: \frac{1}{4} \: lingkaran \\ \\ \frac{25}{7} \times r \\ 25/7×35cm \\ 125 \: cm[/tex]