Tolong di jawab yaaa, sama rumus nya
Jawaban:
bab : GSPL
AP = Jari jari besar = R = 10 cm
BQ = Jari jari kecil = r = 2 cm
AB = jarak pusat = 15 cm
PQ = Panjang garis singgung persekutuan luar
Maka,
GSPL = √AB² – (AP – BQ)²
GSPL = √15² – (10 – 2)²
GSPL = √225 – 8²
GSPL = √225 – 64
GSPL = √161
GSPL = 12,68 cm