I'll give you a brainliest someone.

We know that the formula to find the area of a square is s², where s represents the side length.

Therefore, if the area is 169 m², this is equal to s².

169 = s²

To simplify this, we must perform the inverse operation of squaring a number, which is to square root the number.

√169 = s

13  = s

If the side lengths were 13 meters after being increased by 7 meters, the side length of the original garden is:

13 meters - 7 meters = 5 meters.

Thus, the length of each side of the original garden is 5 meters.

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8,400-6,400=xx/6,400anyways the percent increase is 31.25% or 0.3125 you can round if you can