Two circles of radii $5 \mathrm{cm}$ and $3 \mathrm{cm}$ intersect at two points and the distance between their centres is $4 \mathrm{cm}$. If the length of the common chord is $k cm$ then find the value of $k$.

If the value of $x$ is $k°$ then find the value of $k$ in the following figure.

If the value of $x°$ is $k°$ then find the value of $k$ in the following figure.

If the value of $x°=k$ in the following figure, then find the value of $k$.

Find the value of $x°$ in the following figure.

If the value of $x°=k$ in the following figure, then find the value of $k$.