3. Four mark example problems I

1. A park is circular in shape. The central portion has playthings for kids surrounded by a circular walking pathway. Find the walking area whose outer radius is $10 \ m$ and inner radius is $3 \ m$.

 

 

Area of the circular pathway $=$  $m^2$

 

2. The radius of a circular flower garden is $21 \ m$. A circular path of $14 \ m$ wide is laid around the garden. Find the area of the circular path.

 

 

Answer:

 

Area of the circular path $=$  $m^2$