in triangle abc, p, q, r respectively are points of sides bc, ca, ab if ac=21cm, bc=29cm, ab=30cm then perennate of rectangle APQR will be
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In ∆ABC the length of sides BC,CA and AB are a,b and c respectively. Median AD drawn from A is perpendicular to BC then b is?
1)√(a^2+c^2)
2)√(c^2-a^2)
3)√(a^2-3c^2)
4)√(a^2-c^2)
The answer is √(a^2-3c^2)
1)√(a^2+c^2)
2)√(c^2-a^2)
3)√(a^2-3c^2)
4)√(a^2-c^2)
The answer is √(a^2-3c^2)
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