The length of the minute hand of a clock is $10.5\, cm .$ Find the area of the region swept by it between $2.25 \,PM$ and $2.40 \,PM$. (in $cm^2$)
$84.698$
$86.625$
$68.246$
$98.356$
Area of the largest triangle that can be inscribed in a semi-circle of radius $r$ units is
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 $cm^2$)
The maximum area of a triangle inscribed in a semicircle with diameter $50 \,cm$ is........... $cm^{2}$
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.
In a circle with radius $14 \,cm ,$ the area of minor sector corresponding to minor $\widehat{ ACB }$ is $77 \,cm ^{2}$. Then, minor $\widehat{ ACB }$ subtends an angle of measure $\ldots \ldots \ldots \ldots$ at the centre.