Jawaban:
Jari-jari = πrs
2198 = 3,14 r (r+15)
2198 = 3,14r² + 47,1r
3,14 r ² + 47,1r - 2198=0
r² + 15r - 700 = 0
(r-20) (r+35)=0
r=20 cm
Garis pelukis = r+15
= 20 + 15
= 35 cm
Jadi, jari-jari = 20 cm
garis pelukis = 35 cm
Penjelasan dengan langkah-langkah:
semoga membatu
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Jawaban:
Jari-jari = πrs
2198 = 3,14 r (r+15)
2198 = 3,14r² + 47,1r
3,14 r ² + 47,1r - 2198=0
r² + 15r - 700 = 0
(r-20) (r+35)=0
r=20 cm
Garis pelukis = r+15
= 20 + 15
= 35 cm
Jadi, jari-jari = 20 cm
garis pelukis = 35 cm
Penjelasan dengan langkah-langkah:
semoga membatu