Balls numbered 1 through 6 are arranged in a difference triangle so that in any row, the difference between the larger and the smaller of two successive balls is the number of the ball that appears below them. Fill in the missing balls to form a difference triangle c= X:

Anew landowner is interested in constructing a fence around the perimeter of her property. her property is 1,080√30 feet wide and 500√20 feet long. what is the perimeter of the property? (recall that the perimeter is the sum of each side of a shape or boundary). a 1,580√40 feet b. 5,320√5 feet c. 3,160√20 feet d. 10,640√5 feet