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In the given figure, triangle ABC is an ...

In the given figure, `triangle ABC` is an isosceles triangle, in which AB=AC, `AD bot BC`, BC = 6cm and AD = 4cm. The length of AB is:
दी गयी आकृति में, त्रिभुज ABC एक समद्विबाहु त्रिभुज है जिसमें AB = AC,`AD bot BC`, BC = 6सेमी तथा AD =4 सेमी है | AB की लंबाई कितनी है ?

A

6 cm

B

7 cm

C

4 cm

D

5 cm

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