8. Four mark example problems II

1. Kamalesh has a dining table, circular in shape of radius \(70 \ cm\) whereas Tharun has a circular quadrant dining table of radius \(140 \ cm\). Whose dining table has a greater area? \(\left(\pi = \frac{22}{7}\right)\)

 

Answer:

 

Area of dining table of Tharun has a greater areaKamalesh has a greater areaboth of them have the same area.

 

2. Four identical medals, each of diameter \(7 \ cm\) are placed as shown in the below figure. Find the area of the shaded region between the medals. \(\left(\pi = \frac{22}{7}\right)\)

 

 

Answer:

 

Area of the shaded region between the medals \(=\)  \(sq. \ cm\)