tolong kerjain dong kak
Matematika
ripah2
Pertanyaan
tolong kerjain dong kak
1 Jawaban
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1. Jawaban Yayakrzk
no. 1
T = 20mm d = 7mm r = 1/2×7 = 3,5mm
L permukaan 2πrt
2×22/7×3,5×20
44/7×70
440mm²