Answer:
43.5√3 sq. units
Explanation:
Base 1 of trapezoid is 10.
Base 2 of trapezoid is 16 + 3 = 19
The height = 3√3 (To get the height you had to multiply the number 3 from the bottom base of the trapezoid by the square root of three)
Now plug these numbers into the trapezoid formula: A = 1/2(3√3)(10 + 19)
Simplify to get: 43.5√3 sq. units
Hope this helps you understand!