<prompt> Naannoo geengoo raadiyaasiin kenname shallaguuf hima walqixaa bocu.nan  <response>: Hima walqixaa naannoo geengoo raadiyaasiin r kennameef shallaguuf: Naannoo 2 × π × r bakka π pi dhaabbataa herregaa tilmaamaan 3.14 wajjin walqixa tae dha. 