Question

Since there are 4 sides with a length of `x`, `4x` feet of fencing has been used so far. Since we know that there is 180 feet of fencing, how much feet of fencing is left? Submit your answer as an expression in terms of `x` below.

Answer 1

Using the perimeter relation, the amount of fencing left is obtained using the subtraction operation. Hence, amount of fencing left is 90 feets

Recall :

• Perimeter = 2(length + width)

Hence,

180 = 2(x + 4x)

180 = 2(5x)

180 = 10x

x = 180 / 10

x = 18 feets

Amount of fencing left :

180 - (18 + 4(18))

180 - (18 + 72)

180 - 90

= 90 feets

Therefore, there is 90 feets of fencing left.

Learn more :https://brainly.com/question/18796573