Ineed on this one and the one at the bottom

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

What is the circumference of a circle with an area of 50.24 cm²?

Can someone me with this? i’m not sure what to put for my equations.