Guys i really need you like i am so tired and i need someones know

What is the distance between (–2 1/2,-3) and (1, –3)?

Can someone me and do the problem plz so i can understand it more better

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