The diagonals of a rhombus intersect each other at the midpoints and they are also perpendicular . So at the smallest angle we have a right angled triangle with legs 6 and 3.5. Also this smallest angle (x) is bisected by the diagonal.
so we have:-
tan (x/2) = 3.5 / 6
x/2 = 30.256 degrees
x = 60.51 degrees to nearest hundderth
Shorter <span>piece = x
longer </span><span>piece = 4x
x + 4x = 48.5
5x = 48.5
x = 48.5/5
x = 9.7 cm </span>← shorter piece
longer piece = 4x = 4 * 9.7 = 38.8 cm
Well how do you think i feel ?
Area of cylinder = pi · r^2
Your pic don't have the answer.
But I can tell you the correct points are : (0, 3) (-1 1/2, 0)