J P Mohindru and Bharat Mohindru Solutions for Chapter: Areas Related to Circles, Exercise 4: FOR ASSESSMENT

Write the formula for the area of a segment in a circle of radius $r$ given that the sector angle is $\theta °$.

Area of sector of a circle of radius $\text{'}R\text{'}$ with central angle $\theta °$ is?

Find the perimeter of sector of a circle of radius $\text{'}R\text{'}$ with central angle $\theta °$.

The hour hand of a clock is $6 \mathrm{cm}$ long. The area covered by it between $11.20 \mathrm{A}.\mathrm{M}.$ and $11.55 \mathrm{A}.\mathrm{M}.$ is

In the firgure, the ratio of the areas of two sectors $S_1$ and $S_2$ is:

If the area of a sector of a circle is $\frac{7}{20}$ of the area of the circle, then the sector angle is equal to

In the figures, the area of the shaded region is:

In the figure, if $ABC$ is an equilateral triangle, then shaded area is equal to: