When you multiply a negative by a negative it makes a positive number. Therefore, if you multiply an even number of negative numbers, you get a positive product. The other options have an odd number of negative numbers to multiply by that makes them result in a negative product.
Let w and 2w-6 be the width and length, respectively. Then: w(2w-6)=176 2w²-6w-176=0 (2w+16)(w-11 )=0 w=-16/2 or 11 If the width is 11 km, then the length is 16 km ☺☺☺☺
