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Answer:

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Step-by-step explanation:

Since it is a square field, all the sides will be equal, let each side be named as "a". So, perimeter = 4 sides*length = 4a. Total cost of the field = 4a*35 = 4480. 140a = 4480

Answer: 22.5m

Step-by-step explanation:

Perimeter of square field= total cost/cost per metre = 315/3.50=90 M

let a be a side of the square.

perimeter of square =90 m

4a=90

a=90/4

a=22.5m