Question

Tolong bantuanny Yg sebisany aja Cuma mau untuk ngoreksi

Answer 1

GA/gB
-> (Gm/ rA^2)/(Gm/ rB^2)
-> rB^2 / rA^2
-> (R+R)^2 / (R+R/2)^2
-> 4R^2 / 2.25 R^2
-> 4/2.25
-> 16/9

C.