YOU SAID:

its the radius times 2pi

INTO JAPANESE

それは半径の時間2piです

BACK INTO ENGLISH

it's radius time 2pi

INTO JAPANESE

それは半径時間2piです

BACK INTO ENGLISH

It's a radius time 2pi

INTO JAPANESE

それは半径時間2piです

BACK INTO ENGLISH

It's a radius time 2pi