Answer:
 length of each sides x = 7 meter.
Explanation:
Given : A garden has eight equal sides and perimeter of 56 meters.
TO find : gives the length, in meter, of each sides.
Solution : We have given that a garden has 8 equal sides
Let the length of each sides of garden = x 
Perimeter = sum of all sides or garden 
56 = x +x +x +x +x + x+ x +x
56 = 8x 
On dividing both sides by 8 and switching sides
x = 

x = 7 meter.
Therefore, length of each sides x = 7 meter.