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Q.

In the given figure the length of BC   will be


Question Image

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a

7  cm

b

10  cm

c

14  cm

d

15  cm 

answer is B.

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Detailed Solution

Given that,
Question Image AF=AE=4cm  
BF=BD=3cm   Therefore,
EC=AC−AE   ⇒EC=11−4   ⇒EC=7 cm  
CD=CE=7cm  [Tangents of same external point are equal]
BC=BD+DC   ⇒BC=3+7   ⇒BC=10cm   Thus the value of BC is 10cm.
Therefore the correct option is 2.
 
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