Form a hypothesis about how deeply water could erode and about how deeply glaciers could erode
1 answer:
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Answer:
90 feet
Explanation:
The farmer wants the second side of the garden to be 30 feet longer than the back of his house.
If the back of his house=x ft
The second side=(x+30) ft
Note that the farmer does not fence the side on the back of the house.
Area of the garden = 400 square feet
Area of a Rectangle= Length X Width
400 = x(x+30)
x+40=0 or x-10=0
x=-40 or x=10
Since length cannot be negative, x=10 ft
The Length of the Fencing the farmer will buy will be the perimeter of the three sides.
Perimeter of the three sides = x+(x+30)+(x+30)
=3x+60
=3(10)+60=90 ft
The farmer needs to buy a fencing of length 90 feet.