Jawaban:
rumus luas lingkaran adalah = A =πr²
1. a= 3,14 x 50 x 50
= 7.875cm
2. a = 22/7 x 77 x 77
= 18.634
3.
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Jawaban:
rumus luas lingkaran adalah = A =πr²
1. a= 3,14 x 50 x 50
= 7.875cm
2. a = 22/7 x 77 x 77
= 18.634
3.