Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
The area of a forest is three times the area of the square-shaped street. If the street has a length of 100 meters on one side and the number of trees per square meter in the forest is 4, calculate the total number of trees in the forest.

### Response:
 Eneo la barabara iliyo na umbo la mraba ni 100*100 = <<100*100=10000>>10000 mita mraba.
Eneo la msitu ni mara tatu ya eneo la barabara iliyo na umbo la mraba, jumla ya mita mraba 3*10000 = <<3*10000=30000>>30000.
Ikiwa idadi ya miti kwa kila mita mraba katika msitu ni 4, kuna miti 4*30000 = <<4*30000=120000>>120000 katika msitu.