Question-177634

Question Number 177634 by aurpeyz last updated on 07/Oct/22

Answered by HeferH last updated on 07/Oct/22

\frac{C D}{A D} = \frac{1}{3}

\frac{A_{1}}{A_{t}} = \frac{1}{9} \Rightarrow \frac{42}{A_{t}} = \frac{1}{9}

42 \cdot 9 = A_{t} = 378

Commented by aurpeyz last updated on 07/Oct/22

s o r r y . h o w d i d y o u g e t \frac{1}{9} ?

Commented by HeferH last updated on 07/Oct/22

W h e n t w o t r i a n g l e s a r e s i m i l a r, t h e r a t i o

o f t h e i r a r e a s i s t h e r a t i o o f t h e i r s i d e s

s q u a r e d . I n t h i s c a s e {(\frac{1}{3})}^{2} = \frac{1}{9}

Commented by aurpeyz last updated on 09/Oct/22

t h a n k s

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