The Answer Would Be 45%.
First, You See How Many Centimeters Are In 1 Meter.
1 Meter = 100 Centimeters
100 • 5 = 500
So, Now You Have 225/500. You Can Reduce That Fraction To 9/20.
Now, You Change The Denominator (20) Into 100.
100 Divided By 20 = 5
Then, You Multiply 9 (Numerator) • 5 Because It Took 20, 5 Times To Get To 100.
9 • 5 = 45
You Now Have 45/100, Which Equals 45%.
Therefore, The Answer Is 45%.