Question

Ass,,help me?panjang jari jari dua lingkaran masing masing 22 cm dan 4 cm.panjang garis singgung persekutuan luarnya 24 cm.hitunglah jarak kedua pusat lingkaran trsebut
help me please,,

Answer 1

R =  22 cm
r = 4 cm
l = 24 cm
p = ...?
jawab :
l^2 = p^2 - (R - r)^2
24^2 = p^2 - 18^2
576 = p^2 - 324
p^2 = 576 + 324
p^2 = 900
p = 30 cm