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

### Instruction:
 Mark alitengeneza ubao wa kuchorea ambao una upana wa futi 3. Urefu wake ni mara mbili ya upana wake. Ni eneo gani la ubao wa kuchorea?


### 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.