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Matematika
astri1601
Pertanyaan
pakai cara ya thanks
1 Jawaban
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1. Jawaban niesrinaasmadina
L = 3/4 x πr²
= 3/4 x 22/7 x 21²
= 3/4 x 22/7 x 441
= 3/4 x 1386
=1.039,5 cm ²