Round to the nearest hundredth 3.809

3.81

Step-by-step explanation:

1. You have the following quantity given in the problem above: 3.809

2. To round the quantity to the nearest hundreth you must see the digit in the thousandths place, if it is 5 or greater than 5, the digit in the hundreths place will be round up.

3. Therefore, it is 3.81