AI SL: Circles example 1 (Length arc, area sector, area tri)(Paper 1 TZ2 May 2021)

From Paper 1 (TZ2 May 2021)
Full exam solution:    • AI SL: Paper 1 (TZ2 May 2021)  

Chapters
0:00 Introduction
0:24 A) Length footpath
2:57 B) Area Lawn