Question

PLS Help Me Its Urgent
Class 7 Th Ncert​

Answer 1

Answer:

11cm

Step-by-step explanation:

${ac}^{2} + {bc}^{2} = {ab}^{2} \\ {ac}^{2} = {ab}^{2} - {bc}^{2} \\ {ac}^{2} = {15}^{2} - {12}^{2} = 225 - 144 = 121 \\ ac = \sqrt{121} = 11$

hope it helps u.....,