The area of the circle that can be inscribed in a square of side $6 \, cm$ is (in $cm^2$) (in $\pi$)

The diameter of a circle with area $154\,cm^{2}$ is $\ldots \ldots \ldots . cm$.

The length of the minute hand of a clock is $14 \, cm$. If the minute hand moves from $1$ to $10$ on the dial,then $\ldots \ldots \ldots \ldots \, cm^2$ area will be covered.

Find the area of the shaded region given in the figure.

It is proposed to build a single circular park equal in area to the sum of areas of two circular parks of diameters $16 \, m$ and $12 \, m$ in a locality. The radius of the new park would be (in $m$)

The length of a minor arc of a circle is given by the formula $\ldots \ldots \ldots \ldots$