Step-by-step explanation: so what i did to get this answer is by adding all the numbers so i stack it in order of greater number to least numbers so i did 19.76 + $8 + 6 ( you don't have to put the dollar sign when you add the numbers) and after i added those i got 19.90 as my answer.
<h3 /><h3><u>This means that the side length of the cube is 3 units. The volume, which we previously stated was equal to s3, must then be 33, or 27 cubic units. The answer is 27.</u></h3>