document.write( "Question 482509: a trough is formed by nailing together, edge to edge, two boards 11 ft. in length, so that the right section is a right triangle. If 15 gal. of water are poured into the trough ad if the trough is held level so that a right section of the water is an isosceles right triangle, how deep is the water? (231 cu. in. = 1 gal.) \n" ); document.write( "
Algebra.Com's Answer #330434 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! a trough is formed by nailing together, edge to edge, two boards 11 ft. in length, so that the right section is a right triangle. \n" ); document.write( " If 15 gal. of water are poured into the trough ad if the trough is held level so that a right section of the water is an isosceles right triangle, how deep is the water? (231 cu. in. = 1 gal.) \n" ); document.write( ": \n" ); document.write( "Find the vol of the water in cu/in \n" ); document.write( "15 * 231 = 3465 cu/in \n" ); document.write( ": \n" ); document.write( "Change 11 ft: 11*12 = 132 inches \n" ); document.write( ": \n" ); document.write( "Find the triangular area of the end of the trough; 3465/132 = 26.25 sq/inches \n" ); document.write( ": \n" ); document.write( "Let x = width of the trough; A right triangle area = \n" ); document.write( " \n" ); document.write( "x^2 = 2(26.25) \n" ); document.write( "x = \n" ); document.write( "x = 7.2457 inches the width of each board \n" ); document.write( "; \n" ); document.write( "Find the width of the trough which is the the hypotenuse \n" ); document.write( "h = \n" ); document.write( "h = \n" ); document.write( "h = \n" ); document.write( "h = 10.247 inches wide, also the base of the triangle \n" ); document.write( ": \n" ); document.write( "Find the altitude of the triangle, which is the depth of the water; we know it's area \n" ); document.write( " \n" ); document.write( "10.247d = 2(26.25) \n" ); document.write( "10.247d = 52.5 \n" ); document.write( "d = \n" ); document.write( "d = 5.12 inches is the depth of the water \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check this by finding the vol of water with these measurements \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |