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Question Number 206572 by mr W last updated on 18/Apr/24

Commented by mr W last updated on 18/Apr/24

$$radiusofcirclesis1.$$$$findAB=?$$

Answered by A5T last updated on 19/Apr/24

Commented by A5T last updated on 19/Apr/24

$$\frac{O_{3}C=1}{O_{2}D}=\frac{O_{3}O}{O_{2}O}=\frac{5}{3}\Rightarrow O_{2}D=\frac{3}{5}$$$$AD=\sqrt{O_2{A}^2-O_2{D}^2}=\sqrt{1-\frac{9}{25}}=\frac{4}{5}$$$$\Rightarrow AB=2AD=\frac{8}{5}=1.6$$

Commented by mr W last updated on 19/Apr/24

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