MathDB
find circle radius

Source: flanders '95

September 27, 2005
ratio

Problem Statement

Points A,B,C,DA,B,C,D are on a circle with radius RR. ∣AC∣=∣AB∣=500|AC|=|AB|=500, while the ratio between ∣DC∣,∣DA∣,∣DB∣|DC|, |DA|, |DB| is 1,5,71,5,7. Find RR.
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