ヘロンの公式 じゃありませんでした
heronno kōshikijārimasendeshita
1. It wasn't Heron's formula.
Noun
1. It wasn't Heron's formula.
1. pupil; disciple
1. (common) cold; influenza
1. informal; unofficial
1. snake
2. serpent; large snake
1. official website
1. official; formal
2. formula (e.g. mathematical)
3. official (social media) account (of a company, organization, etc.)
1. then; well