In a circle with radius $21\,cm ,$ the perimeter of a minor sector is $64\,cm .$ Then. the length of the arc of that sector is $\ldots \ldots \ldots . . cm$.
In a circle with radius $21\,cm ,$ the perimeter of a minor sector is $64\,cm .$ Then. the length of the arc of that sector is $\ldots \ldots \ldots . . cm$.
- A
$22$
- B
$11$
- C
$33$
- D
$66$
Similar Questions
In $\odot( O ,\, r),$ minor $\widehat{ ABC }$ subtends a right angle at the centre. The area of the minor segment formed by $\widehat{ ABC }$ is $14.25\,cm ^{2}$ and the area of $\Delta OAC$ is $25 \,cm ^{2}$. Then, the area of the minor sector formed by $\widehat{ ABC }$ is $\ldots \ldots \ldots cm ^{2}$.
In $\odot( O ,\, r),$ minor $\widehat{ ABC }$ subtends a right angle at the centre. The area of the minor segment formed by $\widehat{ ABC }$ is $14.25\,cm ^{2}$ and the area of $\Delta OAC$ is $25 \,cm ^{2}$. Then, the area of the minor sector formed by $\widehat{ ABC }$ is $\ldots \ldots \ldots cm ^{2}$.
If the length of an arc of a circle of radius $r$ is equal to that of an arc of a circle of radius $2 r$, then the angle of the corresponding sector of the first circle is double the angle of the corresponding sector of the other circle. Is this statement false? Why?
If the length of an arc of a circle of radius $r$ is equal to that of an arc of a circle of radius $2 r$, then the angle of the corresponding sector of the first circle is double the angle of the corresponding sector of the other circle. Is this statement false? Why?
In a circle with radius $14\,cm , \overline{ OA }$ and $\overline{ OB }$ are radii perpendicular to each other. Then, the area of the minor sector corresponding to $\angle AOB$ is $\ldots \ldots \ldots . cm ^{2}$.
In a circle with radius $14\,cm , \overline{ OA }$ and $\overline{ OB }$ are radii perpendicular to each other. Then, the area of the minor sector corresponding to $\angle AOB$ is $\ldots \ldots \ldots . cm ^{2}$.
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 $cm^2$)
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 $cm^2$)
In a circle with radius $10\,cm$, the area of a minor sector is $40\,cm ^{2}$. Then, the length of the arc corresponding to that circle is $\ldots \ldots \ldots \ldots cm$.
In a circle with radius $10\,cm$, the area of a minor sector is $40\,cm ^{2}$. Then, the length of the arc corresponding to that circle is $\ldots \ldots \ldots \ldots cm$.