Q. 104.7( 6 Votes )

A triangle has si

Answer :

10.jpg


Here AB=5cm,BC=12cm, AC=13cm.


AC2=AB2+BC2


ABC is a right angled triangle at B.


Area ABC=1/2(BCxBA)


=1/2(12x5)


=1/2x60


=30cm2


Also Area of ABC=1/2xACxBD


=1/2(13xBD)


30=1/2(13xBD)


13XBD=30x2


BD=60/13


BD=4.6 cm


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