Jawabanmu

2014-04-25T07:39:38+07:00
48 : 75 = 3,14xr^2. : 3,14xr^2 = 16 : 25 = r^2 : r^2 ;;@@;; 4:5 = r1 : r2
2014-04-25T07:39:58+07:00
48=phi x r1^2 : 75=phi x r2^2 48/phi=r1^2 : 75/phi=r2^2 r1^2:r2^2 48/phi : 75/phi 48/phi x phi/75 48/75 (dibagi 3) 16 / 25 (diakar) r1 : r2 = 4:5