answer this fast!!!!!!
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AB^2=BC^2 - AC^2
AB^2=13^2-12^2
AB^2=25
AB=5
area of triangle ABC=1/2 ×base×height
1/2×5×12
30
if taken BC as base then area of triangle ABC=1/2×BC×AD
13/2×AD
so,13/2×AD=30
AD=60/13
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