Pls solve sum no. 70 urgently

Dear Student,

Here is the answer to your question.

AD is the median, so D is the mid point of BC. AE⊥BC.

In right ∆ABE,

AB² = AE² + BE² … (1) (Pythagoras Theorem)

In right ∆ADE,

AD² = AE² + ED² … (2) (Pythagoras Theorem)

From (1) and (2), we get

Hope this answer has solved your queries
Regards