Oh my gosh I used to have that same workbook I HATED it. Anyways, the formular for volume is length x width x height, so for this rectangular prism you would multiply 4 2/5 x 10 x 3. Also it doesn’t matter which order you multiply because you should still have the same end result.
Hope this helps! If you need anymore answers from this book then ask me. My teacher made us do like 10 pages a day all school year.
