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

### Instruction:
 Baiskeli isiyo ya kawaida ina radi 20 kwenye gurudumu la mbele na mara mbili ya radi hizo kwenye gurudumu la nyuma. Baiskeli ina radi ngapi?


### Response:
 Gurudumu la nyuma lina 20*2=$<<20*2=40>>40 radi.