As shown in the diagram, the length of square $ABCD$ is $35 \,cm .$ Semicircles are drawn on its sides $\overline{ AB }$ and $\overline{ CD }$ Find the area of the shaded region. (in $cm^2$)
$365.4$
$214.6$
$274.6$
$262.5$
The radii of two concentric circles are $14\, cm$ and $10.5 \,cm .$ Then, the difference between their circumferences is $\ldots \ldots \ldots . cm .$
A chord of a circle of radius $20\, cm$ subtends an angle of $90^{\circ}$ at the centre. Find the area of the corresponding major segment of the circle. (Use $\pi=3.14)$ (in $cm^2$)
The length of the minute hand of a clock is $7\,cm$. The area of the region swept by it in $20$ minutes is $\ldots \ldots \ldots . cm ^{2}$.
The area of a circle is $38.5\, m ^{2}$, then its circumference will be $\ldots \ldots \ldots \ldots m$.
In $Fig.$ a circle of radius $7.5 \,cm$ is inscribed in a square. Find the area of the shaded region (Use $\pi=3.14$ ) (in $cm^2$)