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Verified answer
Menentukan Panjang Jari-Jari LingkaranRumus
Luas Lingkaran = π r^2
Soal
Luas Lingkaran = 84 cm^2
r = ...
Penyelesaian
84 cm^2 = 22/7 × r^2
r^2 = 84 cm^2 / 22/7
r^2 = 26,7...
r = √26,7...
r = 5,16... cm