the perimeter of a rectangular field is 306 yards, if the width of the field is 65 yards, what is the length?

Question

how do i do it?

Answer 1

The perimeter of a rectangle is 2 X width + 2 length.

With that information, can you do the problem?

BTW: Sentences begin with a capital letter and end with a period. Questions also begin with a capital letter, but end with a question mark. Just because this is a math question does not mean that good grammar is unimportant.