- <span>The length of a rectangular garden is 8 feet longer than the width. - </span><span>The garden is surrounded by a 4-foot sidewalk. - The area of the sidewalk is 320 ft</span>².
2. So, the length of the rectangular garden is:
L1=8+W1
3. The formula for calculate the area of the sidewalk, is:
A2=L2xW2
"A2" is the area of the sidewalk (A2=320 ft²).
"L2" is the length of the sidewalk.
"W2" is the widht of the sidewalk.
4. The length of the sidewalk (L2) is:
L2=L1+4+4 (4 feet on each side) L2=L1+8
5. When you substitute L1=8+W1 into the equation L2=L1+8, you obtain:
L2=8+W1+8 L2=W1+16
6. The widht of the sidewalk is:
W2=W1+4+4 W2=W1+8
7. Now, you must substitute the length and the widht of the sidewalk into the formula A2=L2xW2:
Oh all you do is however many numbers in the chart are the same. on the line put how many of each of them. like since there are three 7.5 in the 7.5 place you put how many there were.