What is the area of the trapezoid? a rectangle with a length of 10 and a height of 9 has two right triangles on each side of it with short leg lengths of 9.?

How do you find the area of this triangle.

Atriangle has side lengths of 15 inches and 30 inches. it also has angles that measure 45º and 20º. which of the following identifies the possible third angle of the triangle? a. 15 in., 65º b. 45 in., 65º c. 17 in., 115º d. 14 in., 115º

Given abcd ac=38 and ae=3x+4 find the value of x