document.write( "Question 267085: The length of the hypotenuse of a right-angled triangle is 240 units. The perimeter of the given triangle is a perfect square. If the perimeter of the given triangle is greater than 550 units, then which of the following can be the length of a side of the given right-angled triangle? \n" ); document.write( "
Algebra.Com's Answer #196120 by CharlesG2(834)![]() ![]() ![]() You can put this solution on YOUR website! The length of the hypotenuse of a right-angled triangle is 240 units. The perimeter of the given triangle is a perfect square. If the perimeter of the given triangle is greater than 550 units, then which of the following can be the length of a side of the given right-angled triangle? \r \n" ); document.write( "\n" ); document.write( "a^2 + b^2 = c^2 = 240^2 = 57600 \n" ); document.write( "a + b + 240 > 550 \n" ); document.write( "a + b > 310 \n" ); document.write( "a > 310 - b \n" ); document.write( "b > 310 - a \n" ); document.write( "first perfect square after 550 is 24^2 which is 576 \n" ); document.write( "set a + b + 240 equal to 576 \n" ); document.write( "a + b = 336 (576-240=336) \n" ); document.write( "a = 336 - b \n" ); document.write( "b = 336 - a (use this to subsitute) \n" ); document.write( "a^2 + (336 - a)^2 = 57600 \n" ); document.write( "a^2 + 112896 - 672a + a^2 = 57600 (336^2=112896, 2*336=672) \n" ); document.write( "2a^2 - 672a + 55296 = 0 \n" ); document.write( "a^2 - 336a + 27648 = 0 \n" ); document.write( "27648 = 2 * 13824 \n" ); document.write( "13824 = 2 * 6912 \n" ); document.write( "6912 = 2 * 3456 \n" ); document.write( "3456 = 2 * 1728 \n" ); document.write( "1728 = 2 * 864 \n" ); document.write( "864 = 2 * 432 \n" ); document.write( "432 = 2 * 216 \n" ); document.write( "216 = 2 * 108 \n" ); document.write( "108 = 2 * 54 \n" ); document.write( "54 = 2 * 27 \n" ); document.write( "27 = 3 * 3 * 3 \n" ); document.write( "27648 = 2^10 * 3^3 = 1024 * 27 \n" ); document.write( "144 = 2^4 * 3^2 \n" ); document.write( "27648 = 2^4 * 3^2 * 2^6 * 3 = 16 * 9 * 64 * 3 = 144 * 192 \n" ); document.write( "144 + 192 = 336 \n" ); document.write( "(a - 192)(a - 144)=0 \n" ); document.write( "a = 144 or a = 192 \n" ); document.write( "now b = 336 - a \n" ); document.write( "so b = 192 or b = 144 \n" ); document.write( "side a needs to be a minimum of 144, and side b needs to be a minimum of 192\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |