What is 18% of 225?

To calculate 18% of 225, first convert the percentage into a decimal. This is done by dividing 18 by 100, resulting in 0.18. Next, multiply this decimal by 225:

0.18 × 225 = 40.5.

Thus, 18% of 225 equals 40.5. This value aligns with the answer offered, indicating that it accurately represents the calculation of the percentage requested.

In percentage calculations, it's essential to remember the steps of converting the percentage to a decimal and then performing the multiplication, as that leads directly to the correct result.