Write a decimal that is equivalent to 3 and ten hundredths

First of all, we'll break this up . let's start with three. Three is equal to 3.0. Ten hundredths is equal to (10/100) or 0.1. Now let's add them together. 3.0+0.1=3.1

The surface area would be 576 because you multiply all the numbers then multiply that number by 6