Its the first one because -3(-2)=6, 1(-2)=-2, 2(-2)=4 are all correct
Since it forms a "right triangle" we can apply trigonometry.
sin x = oppo/hyp
sin x = 13/20
x = sin^-1(13/20)
x = sin^-1(0.65)
x = 40.5
rounded to nearest degree
x = 41 degrees
Hope this helps! :)
v=πr^2(r+7) in my opinion is the correct expression
