A rectangular yard measuring 25ft by 35ft

is bordered (and surrounded) by a fence. Inside, a walk that is 2ft wide goes all the way along the fence. Find the area of this walk. Be sure to include the correct unit in your answer.

2 answers

25*35 - (25-4)(35-4) =
Can you find the length and width of the inner rectangle?
can you find the area of the original rectangle?
can you find the area of the inner rectangle?

wouldn't
original rectangle - inner rectange give you the area of the walkway?