No, lawn D will not have the same area and perimeter if it is changed to a regular 9-foot by 10-foot rectangle. This is because lawn D is currently an irregular shape, and by changing it to a regular rectangle, both the area and perimeter will be affected. The area of the current irregular shape will be different than the area of the regular rectangle as they have different shapes and dimensions. Similarly, the perimeter of the irregular shape will be different than the perimeter of the regular rectangle due to the different dimensions and lengths of the sides.
