Jawaban:
no 4
l=π×r×r
=22/7×21×21
21:7=3
22/1×3×21
=66×21
=1.386
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Jawaban:
no 4
l=π×r×r
=22/7×21×21
21:7=3
22/1×3×21
=66×21
=1.386