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पार्श्व चित्र में O वृत्त का केंद्र है और OM ⊥ AB। यदि AB = 10 सेमी और OM = 4 सेमी, तो त्रिज्या OA की लम्बाई है:

(i) 5 सेमी

(ii) 3 सेमी

(iii) \sqrt { 41 } सेमी

(iv) \sqrt { 116 } सेमी

1 Answer

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सही विकल्प है (iii) \sqrt { 41 } सेमी

AM =\(\frac12\) AB = \(\frac12\) x 10 सेमी = 5 सेमी = BM,

OM = 4 FT (OM ⊥ AB)

पाइथागोरस प्रमेय से,

OA2  = OM2 + AM2

4+ 52 = 16 + 25= 41 

OA = √41

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