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In triangle PQR, seg PM is a median. PM=...

In `triangle PQR`, seg PM is a median. PM=10 and `PQ^2+PR^2=328`, then find QR.

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CHETANA PUBLICATION-PYTHAGORAS THEOREM-EXERCISE
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  15. In triangle ADC, /ADC=90^@, /C=45^@, AC=8 sqrt 2 cm. Find AD.

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