document.write( "Question 1120912: A cylindrical container A has radius 20 cm and height 25 cm. It is completely filled with water.
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document.write( "A rectangular container B has length 40 cm and width 25 cm. Initially the container B was empty.
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document.write( "All the water from container A is poured into container B.
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document.write( "The ration of the height of water to the height of container B is 2:3
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document.write( "Find the height of container B \n" );
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Algebra.Com's Answer #736601 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "VA = volume of cylinder (container A) \n" ); document.write( "VA = pi*r^2*h \n" ); document.write( "VA = pi*20^2*25 \n" ); document.write( "VA = pi*400*25 \n" ); document.write( "VA = 10000pi \n" ); document.write( "VA = 10000*3.1415926535898 \n" ); document.write( "VA = 31415.926535898 \n" ); document.write( "which is approximate\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "VB = volume of rectangular prism or rectangular box (container B) \n" ); document.write( "VB = L*W*H \n" ); document.write( "VB = 40*25*H \n" ); document.write( "VB = 1000*H \n" ); document.write( "at this point, H is the unknown height of the box\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "All of the water in container A is poured into container B. \n" ); document.write( "We have approximately 31415.926535898 cubic cm of water poured. \n" ); document.write( "If VB were equal to this approximation, then we'd have some other height k such that\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "VB = 31415.926535898 \n" ); document.write( "1000*k = 31415.926535898 \n" ); document.write( "k = 31415.926535898/1000 \n" ); document.write( "k = 31.415926535898 \n" ); document.write( "The height of the water in container B is roughly 31.415926535898 cm.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "We are told that the ratio of the height of water in container B to it's total height is 2:3. \n" ); document.write( "What this means is that if the height of the water was say 2 cm, then the overall container would be 3 cm tall.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So we have this basic template \n" ); document.write( "height ratio = (height of water)/(height of container) \n" ); document.write( "turning into this \n" ); document.write( "2/3 = k/H\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Plug in the value for k. Solve for x \n" ); document.write( "2/3 = k/H \n" ); document.write( "2/3 = 31.415926535898/H \n" ); document.write( "2*H = 3*31.415926535898 \n" ); document.write( "2*H = 94.247779607694 \n" ); document.write( "H = 94.247779607694/2 \n" ); document.write( "H = 47.123889803847\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The approximate height of container B is roughly 47.12 cm. \n" ); document.write( "This value has been rounded to two decimal places. \n" ); document.write( "Round to further decimal places if you need more accuracy. \n" ); document.write( " \n" ); document.write( " |