A wire fence is to be erected along one side of a paddock. The straight section of fence is 126 meters long. If the posts are to be 3 meters apart how many posts will be required?

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

Iknow the answer but the calculator doesn't seem to give the right one

The height, h, of a cylinder is 5 units less than 3times its radius, r. which expression represents the height of the cylinder in terms of its radius