Final answer:
To multiply 400 and 45.2 together, multiply the numbers and round to the nearest hundredth.
Step-by-step explanation:
To multiply 400 and 45.2 together, we can simply multiply the two numbers:
400 * 45.2 = 18,080
Since we need to round to the nearest hundredth, we look at the digit in the thousandth place. In this case, it is 0. Since 0 is less than 5, we round down the hundredth place. Therefore, the rounded answer is:
18,080 rounded to the nearest hundredth is 18,080.00