Calculate cos0 to two decimal places

David must install fencing around a lot that is shaped like a right angle. the side of lot that runs east-west is 200 ft long. the side of the lot runs north-south is 125 ft long. calculate how many feet of fencing he will need to surround the entire lot.

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

Which of the following expressions is equal to 2x^2+8