the internal dimensions of a rectangular box are 12 cm *x cm* 9 cmif the length of the longest rod that can be placed in this box is 17 cm find x Share with your friends Share 1 Varun.Rawat answered this We have,length, l = 12 cm; breadth, b = x cm; height, h = 9 cmlength of longest rod = length of the diagonal = l2+b2+h2⇒17 = 122+x2+92⇒289 = 144+x2+81⇒x2 = 289 - 225 = 64⇒x = 8So, breadth = 8 cm 8 View Full Answer