Question

the area of a rectangle is 360cm², which is equal to 90% of the area of a square. What is each side of the square ?
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Answer 1

Answer:

20cm

Step-by-step explanation:

360=90/100(x^2)

x^2=3600/9

x^2=400

x=20

Therefore, each side of the square is 20cm

Answer 2

Answer:

$\frac{360 \times 90}{100} = 324 \\ 324 = {side}^{2} \\ side = \sqrt{324 } \\ side = 18cm$