A rectangular yard measuring 33ft 50ft by is bordered (and surrounded) by a fence. Inside, a walk that is 3ft wide goes all the way along the fence. Find the area of this walk. Be sure to include the correct unit in your answer.

Question

A rectangular yard measuring 33ft 50ft by  is bordered (and surrounded) by a fence. Inside, a walk that is 3ft wide goes all the way along the fence. Find the area of this walk. Be sure to include the correct unit in your answer.

turingtest · Answer

|dw:1325720199680:dw|Look at the picture and try to use the formula for a rectangle:
$$A=w\times\ell$$where b is the width of the base and l is the length of the side. Subtract the area of the smaller rectangle from that of the larger one. That will be the area of the border.