Help plsss. This maths equation is to hard

Answer: 64m
Step-by-step explanation: first,lets use the formula to find a trapezoids area. the formula is 1/2 x (b1 +b1) x h. well then if add on the numbers it would be 1/2 x (5+11) x 8. so lets start solving. as you know parenthesis comes first. so 1/2 x (5+11) x 8 turns into 1/2 (16) x 8. then you multiply the base (16) with the height (8). then 1/2 (16) x 8 turns into 1/2 x 128. now lets divide 128 by 2 ( now this is a method for multiplying by 1/2, if you do not believe me search it up.). the answer is 64.