3. CBQ - Area of circle

Raghu accepts to create a circular wall painting in a reputed school. He decides to make a sector with the central angle of 20\(^\circ\) in red and the remaining portion in yellow. Also, the radius of the circle is 8 \(m\). [Use \(\pi = 3.14\)]

 

1. What is the area of the painting in red?

 

2. What is the area of the painting in yellow?

 

3. If the radius of the circle is 22 \(m\), what will the area of the portion in red be?

 

4. If the radius of the circle is 22 \(m\), and the painting cost of one unit is \(Rs\).47, what is the total painting cost of the portion in yellow?