alleryइरा 20 km दक्षिण की ओर चलती है, बाएँ मुड़ती है और 21 km चलती है। वह प्रारंभिक बिंदु से कितनी दूरी पर है?
A41 km
B29 km
C25 km
D31 km
Answer & Solution
Correct answer: B. 29 km
बायाँ मोड़ एक समकोण बनाता है, इसलिए दूरी 400 और 441 के योग का वर्गमूल है, जो 29 km है।
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