dik:
Matematika
adzra2574
Pertanyaan
dik:
<aob:60°
r:20cm
dit:
luas sudut aob
<aob:60°
r:20cm
dit:
luas sudut aob
1 Jawaban
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1. Jawaban Dimasalfan04
Luas
[tex] = \frac{ \alpha }{360} \times \pi \: {r}^{2} \\ \\ = \frac{60}{360} \times 3.14 \times {20}^{2} \\ \\ = \frac{1}{6} \times 3.14 \times 400 \\ \\ = 209.33 \: {cm}^{2} [/tex]