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

The circumference of a circle is $88 \, cm$. The length of each side of a square inscribed in that circle is $\ldots \ldots \ldots \, cm$.

The radius of a circle is $12 \, cm$. Find its circumference and area $(\pi = 3.14)$.

The formula to find the length of a major arc of a circle is ............

In a circle with radius $56 \, cm$,find the area of the minor sector,the major sector,and the minor segment corresponding to two radii perpendicular to each other.

In a circle with radius $30\,cm$,a minor arc subtends an angle of measure $60^{\circ}$ at the centre. Then,the area of the minor sector formed by that arc is $\ldots \ldots \ldots \ldots$ $cm^{2}$. $(\pi = 3.14)$