Question 21 of 23
2 Points
If the area of the trapezoid below is 234 square units, what is the value of x?

A. 18 units
B. 4.5 units
C. 2.25 units
D. 9 units

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.