[Graphs generated by this script: initPicture(-5,5,-5,5);fill='red';circle([0,0],4);fill='white';circle([0,0],3);text([2,0],"13",'above');line([0,0],[4,0]);line([0,0],[0,-3]);text([0,-1.5],'10','right');]

Find the area of the shaded area.

Round your answer to the nearest hundredth. Use 3.14 or the pi button on your calculator.