Answer: 99m
Explanation:
perimeter= 354m
width= 78m
width+length+width+length= perimeter
We will use the formula above to solve this problem.
1. 78m + 78m = 156m which is the 2 sides which are the widths.
2. 354m - 156m = 198m which is the 2 sides which are the lengths.
3. 198 ÷ 2 = 99m
The length of the garden is 99m.
I hope you understood!