Help please what is the volume

How to find the volume of an area and height

When creating passwords for secure accounts, which of the following rules should you apply? a.use personal information that is easy to remember.use a variety of letters, numbers and characters.use a sequence or pattern of numbersd.use the same password for all accounts

Marcos works the summer while in college and earns $6,000 working on oil rigs. he files his own return, does not take the personal exemption but claims the standard deduction. how much would he pay in income tax?