alleryఇరా దక్షిణం వైపు 20 km నడిచి, ఎడమవైపు తిరిగి 21 km నడిచింది. ప్రారంభ స్థానం నుండి ఆమె ఎంత దూరంలో ఉంది?
A41 km
B29 km
C25 km
D31 km
Answer & Solution
Correct answer: B. 29 km
ఎడమ మలుపు అనేది లంబకోణం అవుతుంది, కాబట్టి ఆ దూరం 400 ప్లస్ 441 యొక్క వర్గమూలం, అంటే 29 km.
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