In $\odot( O ,  4\, cm ),$ the length of chord $\overline{ AB }$ is $4 \,cm .$ Then, $m \angle AOB =\ldots \ldots \ldots \ldots$

The area of a minor sector of $\odot( P , 30)$ is $300 \,cm ^{2} .$ The length of the arc corresponding to it is ...........$cm .$

As shown in the diagram, the length of square garden $ABCD$ is $60\, m$. Flower beds are prepared in the shape of segment on two opposite sides of the square. The centre of the segments is the point of intersection of the diagonals of square $ABCD.$ Find the area of the flower beds. $(\pi=3.14)$ (in $m^2$)

The length of diagonals of square garden $ABCD$ is $120\, m$. As shown in the figure, there are flower beds on two opposite sides of the garden in the shape of minor segment the centre of which is the point of intersection of diagonals. Find the area of these flower beds. $(\pi=3.14)$ (in $m^2$)

The closed figure formed by an arc of a circle and the radii through its end points is called .........

Is the following statement true? Give reasons for your answer.

Area of a segment of a circle $=$ area of the corresponding sector - area of the corresponding triangle.