Answer:
1.90°
2.96cm2
3.16cm
Explanation:
I when I wanted to get the area of rhombus I wrote:
( area of one triangle * 4 )
this is because a rhombus is made up of four right angle triangles
so if you take each times four, you'll end up getting the area of the whole rhombus.
and that's why I took only one triangle times four and then I got the area.
in case you don't understand feel free to ask.
good day.