Find the area and the circumference of the circle. Round your answers to the nearest hundredth. area: square units circumference: units

The median of a data set is the measure of center that is found by adding the data values and dividing the total by the number of data values that is the value that occurs with the greatest frequency that is the value midway between the maximum and minimum values in the original data set that is the middle value when the original data values are arranged in order of increasing (or decreasing) magnitude

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Math i have no idea how to do a and b