Embibe Experts Solutions for Chapter: Areas Related to Circles, Exercise 1: Punjab Board-2019

Area of a sector of angle $p$ (in degrees) of a circle with radius $R$ is

In the given figure, $OACB$ is a quadrant of circle with centre $O$ and radius $3.5\mathrm{ }\mathrm{cm}$ . If $OD=2 \mathrm{cm}$, find the area of the Quadrant $OACB$.

In the given figure, $OACB$ is a quadrant of circle with centre $O$ and radius $3.5\mathrm{ }\mathrm{cm}$ . If $OD=2 \mathrm{cm}$, find the area of the shaded region.

Write the formula for finding the area of the sector of a circle with angle $\theta$.

In a circle of radius $21 \mathrm{cm}$, an arc subtends an angle of $60°$ at the centre. Find the length of the arc.

In a circle of radius $21 \mathrm{cm}$, an arc subtends an angle of $60°$ at the centre. Find the area of the sector formed by the arc.