The radius of a circular ground is $56\, m$. Inside it, runs a road of width $7 \,m$ all along its boundary. Find the area of this road. (in $m^2$)
$2310$
$2218$
$2601$
$2851$
In $Fig.$ $ABCD$ is a trapezium with $AB \| DC , AB =18 \,cm , DC =32 \,cm$ and distance between $AB$ and $DC =14\, cm .$ If arcs of equal radii $7\, cm$ with centres $A , B , C$ and $D$ have been drawn, then find the area of the shaded region of the figure. (in $cm^2$)
The radius of a circular ground is $35\, m$. Inside it, $3.5 \,m$ broad road runs around its boundary. A part of the road between two radii forming an angle of measure $72$ at the centre is to be repaired. Find the cost of repairing at the rate of ₹ $80 / m ^{2}$. (in ₹)
Is the area of the largest circle that can be drawn inside a rectangle of length $a \,cm$ and breadth $b \,cm (a>b)$ is $\pi b^{2} \,cm ^{2}$ ? Why?
The length of minor $\widehat{ AB }$ of a circle is $\frac{1}{4}$ th of its circumference, then the measure of the angle subtended by minor $\widehat{ AB }$ at the centre will be $\ldots .$
In a circle, the length of a minor arc is $110 \,cm$ and it subtends an angle of measure $150$ at the centre. Then, the radius of the circle is $\ldots \ldots \ldots \ldots cm$.