document.write( "Question 158046: On Martin's car the total length of the windshield wiper arm, plus the blade, is 31 inches and it turns through a 110 degree angle. If the blade alone is 18 inches long to the nearest square inch how much area of the windshield is cleaned by the wiper blade? \n" ); document.write( "
Algebra.Com's Answer #116500 by joey_quizan(15)![]() ![]() ![]() You can put this solution on YOUR website! Sol:\r \n" ); document.write( "\n" ); document.write( " A=Total Area \n" ); document.write( " A=2*31*3.1461*(110/180)=119 sq.in. \n" ); document.write( " a=area cleaned by wiper \n" ); document.write( " a= 119-2*(31-18)*3.1461*(110/180) \n" ); document.write( " Ans: a= 69 sq.in. \n" ); document.write( " |