Telangana Board Solutions for Chapter: Tangents and Secants to a Circle, Exercise 3: Do This

The area of sector$=$_____${\mathrm{cm}}^2$, If the radius is $7 \mathrm{cm}$ with the given angle: ${60}^0$.

If the area of sector, with the radius $7 \mathrm{cm}$ and the angle $30°$ is $k {\mathrm{cm}}^2$, then find the value of $k$. (write the $k$ value to $2$ decimal place)

If the area of sector, whose radius is $7 \mathrm{cm}$ with the given angle $72°$ is $k {\mathrm{cm}}^2$, find the value of $k$. Assume $\left(\mathrm{\pi }=\frac{22}{7}\right)$

If the area of sector, whose radius is $7 \mathrm{cm}$ and the angle is ${90}^{°}$ is  $k.5 {\mathrm{cm}}^2$ then find $k$.

If the area of sector, whose radius is $7 \mathrm{cm}$ with angle $120°$ is $\mathrm{A} {\mathrm{cm}}^2$, then find the value of $\mathrm{A}$, correct to two decimal places. Assume $\mathrm{\pi }=\frac{22}{7}$.

The length of the minute hand of a clock is $14 \mathrm{cm}$. Find the area swept by the minute hand in $10$ minutes.

Express your answer in $c{m}^2$.