r2+r1=15+
2r2 = 20
r2= 10
Subsitusi
r2+r1=15
10+r1= 15
r1= 15-10= 5
b. Jarak kedua lingkaran = (P) – (r2+r1)
= (25)-(10+5)
r2+r1=15+
2r2 = 20
r2= 10
Subsitusi
r2+r1=15
10+r1= 15
r1= 15-10= 5
b. Jarak kedua lingkaran = (P) – (r2+r1)
= (25)-(10+5)
Editor: Jero Kadek Wahyu Baratha