Can someone please help me find the area of a regular pentagon of radius 4m? thank you :(

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

This is about circle theorems. someone asap : (