Final answer:
To find the perimeter, use the formula P = 2L + 2W. To find the area, use the formula A = L * W. Please provide the full question for the conversion of L.
Step-by-step explanation:
To find the perimeter of a rectangular shape, you need to add up all the sides. Since a rectangle has two pairs of equal sides, we can use the formula P = 2L + 2W, where P is the perimeter, L is the length, and W is the width. So in this case, the perimeter formula would be 50 = 2L + 2W.
To find the area of a rectangle, you multiply the length by the width. So the area formula would be A = L * W.
Unfortunately, the third part of the question is cut off, so I can't provide the conversion for L. If you provide the full question, I'll be happy to assist you with the conversion.