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John is putting fencing around his garden. He already has 30 feet of fencing. His garden is 9 feet by 8 feet. How many more feet of fencing does John need to buy



Answer :

Intriguing456

Answer:

4 feet

Step-by-step explanation:

John has a rectangular garden with side lengths:

  • width = 9 ft
  • length = 8 ft

If we want to put a fence around the entire garden, he will need some length of fencing equal to its perimeter. We can find the length of the perimeter by adding all of the rectangle's sides:

  • P = 2w + 2l

where P = perimeter, w = width, l = length.

Plugging in the given side lengths, we get:

  • P = 2(9 ft) + 2(8 ft)
  • P = 18 ft + 16 ft
  • P = 34 ft

This is the total amount of fencing that John needs to put fencing around his garden. We are given that he already has 30 ft. So, to solve for the amount of fencing he needs to buy, we can subtract the amount he already has from the total:

  • N = (total P) - (current amount)
  • N = 34 ft - 30 ft
  • N = 4 ft

So, John needs to buy 4 feet of fencing.

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