Pls help... The top of an office desk is in the shape of a semicircle, as shown in the figure below.

Based on the dimension given in the figure, which
of the following is closest to the area of the top of the office desk? (Use 3.14 for pi)

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?