alleryইরা 20 km দক্ষিণ দিকে হেঁটে বাঁ দিকে মোড় নিয়ে 21 km হাঁটেন। শুরুর স্থান থেকে তিনি কত দূরে আছেন?
A41 km
B29 km
C25 km
D31 km
Answer & Solution
Correct answer: B. 29 km
বাঁ দিকে মোড় নেওয়া মানে একটি সমকোণ তৈরি হওয়া, তাই দূরত্বটি হলো 400 এবং 441-এর যোগফলের বর্গমূল, যা 29 km।
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