A 8. What is the value of AD in the...
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A 8. What is the value of AD in the triangle below? (A) 512 (B) 10 (C) 11 (D) 13 20 (E) 1212 B2 11D 5

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Maths
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lu ( triangle A B C ), ( begin{aligned} & A^{A} quad A^{2}=A C^{2}+B C^{2} & A C=sqrt{A B^{2}-B C^{2}} 12 &=sqrt{400-256} B &=12 end{aligned} ) Now la A ADC ( begin{array}{rlrl} & 1^{A} & & A D^{2}= & A c^{2}+D c^{2} 12 & & & =sqrt{A c^{2}+Delta c^{2}} D & 5 & & =sqrt{144+25}end{array} ) [ therefore mid A D=13 ]
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