What is the volume of a cylinder with a diameter of 7 in. and a height of 12 in.? (Use 3.14 to represent π ) ( round to two decimal places ; number only )

Last month, leonhard euler's watch kiosk at the mall had total sales of $9,489. merchandise totaling $225 was returned. the goods that were sold cost leonhard euler's $5,481. operating expenses for the moth were $992. what was the gross profit on sales?