Jack needs 72 feet of fencing.
You had to do 4 ft x 18 ft which would give you the answer of 72. To find the area of a rectangle you do length x width.
Answer:
If a and b are the lengths of the legs of a right triangle and c is the length of the hypotenuse, then the sum of the squares of the lengths of the legs is equal to the square of the length of the hypotenuse.
They he said hope this helps
