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

### Instruction:
Mark made a chalkboard that is 3 feet wide. It is 2 times as long as it is wide. What is the area of the chalkboard?

### Response:
 Urefu wa ubao wa kuchorea ni mara 2 ya upana wa futi 3 ambao ni 2 x 3 = <<6=6>>6 futi.
Tunaweza kuhesabu eneo kwa kuzidisha upana na urefu, hivyo 3 futi x 6 futi = <<3*6=18>>18 futi.