document.write( "Question 809043: The diameter of the cone in this hat is 18cm. Its slant height, s cm, is 21 cm. What is the height of the hat?
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Algebra.Com's Answer #487363 by Cromlix(4381)![]() ![]() You can put this solution on YOUR website! Right angled triangle question. \n" ); document.write( "Divide diameter by 2 to obtain \n" ); document.write( "the radius. \n" ); document.write( "18/2 = 9cm. \n" ); document.write( "Base side of triangle = 9cm. \n" ); document.write( "Hypotenuse of triangle = \n" ); document.write( "slant height = 21cm \n" ); document.write( "Vertical side = height \n" ); document.write( "Hypotenuse^2 - Base side^2 = Height^2 \n" ); document.write( "21^2 - 9^2 = Height^2 \n" ); document.write( "Height^2 = 360 \n" ); document.write( "Height = \n" ); document.write( "Height = 18.97cm (Two decimal places) \n" ); document.write( "Hope this helps. \n" ); document.write( ":-) \n" ); document.write( " |