Question

The bisector of the vertical ∠ A of an isosceles triangle ABC meets the base BC at D. If AB = AC = 5 cm, AD = 3cm, Find the length of BC.

Answer 1

in tri ABD AB^2= AD^2+BD^2 25-9=BD^2 BD=4cm andIN TRI ADC AC^2=AD^2+CD^2 25-9=DC^2 DC=4cm BC=BD+DC BC=8cm

Answer 2

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Refer to The Attachment

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