Given the triangle 16x1853[Graphs generated by this script: initPicture(-15,55,-15,55);line([0,0],[25,50]);line([25,50],[50,0]);line([0,0],[50,0]);text([5,25],"16");text([45,25],"x");text([25,-5],"18");text([12,6],"53");circle([20,10],1)], find the area of the triangle. Round your final answer to 4 decimal places.

Area =    units2\displaystyle {u}{n}{i}{t}{s}^{{2}}