The area of a square field is 2500 m2. explain how you know the dimensions of the field are 50 m by 50 m.

A square by definition has sides of equal length - and the area of a rectangle is calculated by multiplying the length of the two sides together.

Taking the value of one side of the square to be x, we know that the area of the square is x^2.

Therefore to find x, we need to take the square root of 2500, which is 50.

4x - 10 = 70

5x - 30 = 70
8(x - 10) = 80
5x - 100 = 0

Therefore, option B would be the correct answer. :)