Solve these pls

Dear Student,

Please find the below required solution.
$$\begin{gathered} U\sin g Pythagoras theorem \\ {x}^2=5^2+{12}^2 (\sin ce angle opposite to x is {90}^o as angle is a semi circle is right angle ] \\ {x}^2=25+144 \\ {x}^2 = 169 \\ x = \sqrt{169} \\ x = 13 cm \\ Since x is dimeater and y is radius so y = x/2=13/2 = 6.5 cm \end{gathered}$$


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