Answer:
40
Step-by-step explanation:
A = base x height
8 is base
5 is height (the height has to be perpendicular to the base. That's what the little square denotes. Along with the angle being 90°.
A = 8 x 5
A = 40
Sin^-1(5/13) = 22.6
sin(22.6/2) = 0.196
In the blank the answer is x axis
I am pretty sure your answer will be 96783564.8, but it may need to be rounded. If I am wrong, I am sorry.
Hope this helps~!
A regular dodecahedron is a regular polyhedron composed of 12 equally sized regular pentagons.
