Gary's garden is shaped like a rectangle with two pairs of sides of equal length and it has a perimeter of 28 feet explain how to find the length of the other sides if one side measures 10 feet

If you draw out a rectangle, two opposite sides will be 10 feet and the other two sides we will label as x. 

The perimeter of a rectangle is adding up all the sides, so if you add up all those sides you get 

x + x + 10 + 10 

we know the perimeter is 28 feet, so we know

x + x + 10 + 10 = 28 

now we can solve for x

x + x + 10 + 10 = 28
2x + 20 = 28 
2x = 8
x = 4

one of the other sides is 4 feet

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