Answer:
Step-by-step explanation:
We are given the area of square A as 40 ft². Then we are told that the area of square B is 250% of A's area. The equation in words that we are going to be using is:
Area of square B = 2.5 × Area of square A where the word "is" is replaced by an equals sign, and the word "of" is replaced by a multiplication sign. We know that the area of A is 40, so:
Area of square B = 2.5(40) and
Area of square B = 100 ft²
The area formula for a square is A = s², so if the Area is 100:
100 = s² so
s = 10ft
