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7 August, 11:01

Given that ab is a tangent if circle with center at x, ab=12, and xd=2.5, which is the length of db

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  1. 7 August, 11:21
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    So if u draw out the questions

    so xbd is a triangle : so xb is 12/2 cm = 6 cm

    xd is 2.5 cm and because of the Pythagoras theorem

    6^2+2.5^2=bd^2

    42.25=bd^2

    bd=6.5
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