Question 1042258
It helps to draw it.
Since it is isosceles, the angles are the same and must be 70 degrees.
sin 70=x/7, and that is the height of the trapezoid, or 6.58 feet
cos 70=y/7, and that is half the distance that the longer base is over the shorter base.
y=7 cos 70=2.39 feet
The longer base is 4.79 (rounding) feet greater than the shorter base, so the shorter is 17.21 feet long.
The diagonal:  The base of the right triangle for which the diagonal is the hypotenuse is 22-2.39=19.61 feet long.  The height is 6.58 feet.  Square both and have 384.390+43.268=427.658.  The hypotenuse is the square root of that.
The square root of that is 20.68 feet. Diagonal.