Question

find the value of x ​

Answer 1

by the pythagoras theoram.

(10)^2= x^2 +(6)^2

100=x^2+36.

100-36=x^2.

64=x^2.

8=x. ( by under root )

Answer 2

It is a right angle triangle
we know that
${h}^{2} = {l}^{2} + {b}^{2} \\ {10}^{2} = {x}^{2} + {6}^{2} \\ 100 = {x}^{2} + 36 \\ 100 - 36 = {x}^{2} \\ 64 = {x}^{2} \\ 8 = x$