In the case of circular tracks,  number of intervals $$=$$ number of trees,  $$600\div 6=100$$,  $$100$$ trees are planted round the lake. 
The boundary of a lake is $$600\text{m}$$ long. Trees are planted at regular intervals of $$6\text{m}$$ round the lake. How many trees are planted round the lake? 

  - $$99$$ 
  - $$100$$ 
  - $$101$$ 