Find the area of the trapezoid

Anyone know? will mark brainliest if you're correct!

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field