एक सुबह रोहन अपने घर से निकला और दक्षिण की ओर 20 किमी चला, फिर दाएं मुड़ा और 10 किमी चला, फिर दाएं मुड़ा और 20 किमी चला और अंत में बाएं मुड़कर 20 किमी चला। अपनी अंतिम स्थिति से सीधे अपने घर पहुँचने के लिए उसे कितने किलोमीटर चलना होगा?

Logan starts from Point A and drives 18 km towards west. He then takes a left turn, drives 15 km, turns right and drives 12 km. He then takes a right turn and drives 15 km. He takes a final right turn, drives 5 km and stops at Point P. How far (shortest distance) and towards which direction should he drive in order to reach Point A again? (All turns are 90-degree turns only.)

Arvind starts from Point A and drives 25 km towards east. He then takes a right turn, drives 10 km, turns left and drives 20 km. He then takes a left turn and drives 10 km. He takes a final left turn, drives 12 km and stops at Point P. How far (shortest distance) and towards which direction should he drive in order to reach Point A again?