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 $=$  $sq. \ cm$