The perimeter of a rectangle is 400 yards what are the dimensions of the rectangle if the length is 40 yards more than the with the length is how many yards and the width is how many yards

The lengths of two sides of a triangle are 9 and 15. what can be said about the length of the third side? a. it must be greater than or equal to 6 and less than 24. b. it must be greater than or equal to 6 and at most 24. c. it must be greater than 6 and less than 24. d. it must be greater than 6 and at most 24.