PLEASE help me with this equation

Fiona and her friends are playing a game by guessing where a coin will land when it is randomly dropped inside the square shown below. fiona guesses that the coin is likely to land in the blue area. which explains whether or not fiona is correct and why?

What percent of the circle below is shaded?

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days