I put this but idk how to do it
Mathematics
heyhey8jdjsk
Question
I put this but idk how to do it
1 Answer

1. User Answers HomertheGenius
d ( AC ) = 6 ( because A and C have the same ycoordinate )
d ( AB ) = √[(x2  x1)² + (y2  y1)²],
where A ( x1, y1 ) = ( 3, 1 ) and B ( x2, y2 ) = ( 1, 3 )
d ( AB ) = √[(1 (3))² + (3  1 )²] = √[(2)² + 2²] = √8 = 2√2
d ( BC ) = √[(3(1))² + (13)² =√[4² + (2)²]= √20 = 2√5
The perimeter of ΔABC:
6 + 2√2 + 2√5 = 6 + 2 · 1.41 + 2 · 2.24 =
= 6 + 2.82 + 4.48 = 13.30