The shorter piece is 1 unit and equals 13 cm. The longer piece is 5 units.<br><br>[[model:questions/solutions/q4497.png]]<br><br>• $$\frac{1}{1}$$ unit → 13 cm (shorter piece)<br>• Longer piece → 5 units → 5 × 13 = 65 cm<br><br>The longer piece is 65 cm long.<br>Check: Total length = 13 + 65 = 78 cm. Ratio 13 : 65 = 1 : 5. ✓