যদি ΔABC∼ΔPQR এবং ΔABC এর ক্ষেত্রফল / ΔPQR এর ক্ষেত্রফল = 25/49 হয়, তবে AC/PR এর অনুপাত কত হবে? 

  1. 49/25
  2. 25/49
  3. 5/7
  4. 7/5

Answer (Detailed Solution Below)

Option 3 : 5/7
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প্রদত্ত :

ΔABC∼ΔPQR

ΔABC এর ক্ষেত্রফল / ΔPQR এর ক্ষেত্রফল =  25: 49

ধারণা:

যদি, ΔABC∼ΔPQR হয় তবে

ΔABC এর ক্ষেত্রফল / ΔPQR এর ক্ষেত্রফল (AB / BC) 2 = (PQ / QR) 2 = (AC / PR) 2

গণনা:

ΔABC এর ক্ষেত্রফল / ΔPQR এর ক্ষেত্রফল = 25/49

⇒ 25/49 = (AC/PR)2

⇒ (AC/PR) = √(25/49)

∴ AC/PR = 5/7

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