Can you help me put the volume of these cylinders in? I can’t understand exactly what to do. I finished D and E with teacher help. (Will give brainliest)

Pls! does anybody know a shortcut for answering these types of questions in the future?

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?