The area of a circle is $75.46\, cm ^{2}$. Find its circumference. (in $cm$)
$42.26$
$36.8$
$30.8$
$20.6$
In $\odot$ $(P, 20),$ the area of a minor sector is $150\, cm ^{2}$. The length of the arc corresponding to that sector is $\ldots \ldots \ldots$ $cm .$
The area of a circle is $200\, cm ^{2}$. Then, the area of a minor sector of that circle can be $\ldots \ldots \ldots . . cm ^{2}$.
Floor of a room is of dimensions $5 \,m \times 4 \,m$ and it is covered with circular tiles of diameters $50 \,cm$ each as shown in $Fig.$ Find the area of floor that remains uncovered with tiles. (Use $\pi=3.14)$ (in $m ^{2}$)
In a circle with radius $30\,cm ,$ a minor arc subtends an angle of measure $60$ at the centre. Then, the area of the minor sector formed by that arc is $\ldots \ldots \ldots \ldots$ $cm ^{2}$. $(\pi=3.14)$
Find the area of the shaded field shown in $Fig.$