Question

In ∆ ABC, angle ABC = 90°
Seg BD is the median
on hypotenuse AC
BD = 7 cm
Find : AC​

Answer 1

Answer:

ok this is correct question

Answer 2

Answer:

Given, BD = 8 cm, AD = 4 cm, ∠ABC  = 90° and BD⊥AC.

we know that ,If a perpendicular is drawn from the vertex containing a right angle of a right triangle to the hypotenuse then the triangle on each side of the perpendicular are similar to each other and to the whole triangle.

So, ΔDBA∼ΔDCB  (A-A similarity)

BD/CD = AD/BD

[Since, triangles are similar, hence corresponding sides will be proportional]

BD² = AD x DC

(8)² = 4 x DC

64 = 4DC

DC = 64/4  

DC = 16  

Hence, the length of  CD is 16 cm..

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