luas lingkaran 1.386 cm².Diameter...cm
Matematika
meliarahma1
Pertanyaan
luas lingkaran 1.386 cm².Diameter...cm
2 Jawaban
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1. Jawaban Anonyme
Kelas 55 Matematika
Bab Bangun Datar Sederhana
Luas = 1.386
1/4 x π x d x d = 1.386
1/4 x 22/7 x d² = 1.386
d² = 1.386 x 28/22
d = √(1.764)
d = 42 cm -
2. Jawaban hikmah223
L = 22/7 X r X r
1.386 = 22/7 X r2
1386 : 22 X 7 = r2
63 X 7 = r2
441 = r2
21 = r
42 = d