Question

m=12,n=14 by pythagorean triplet by taking

Answer 1

12 square +14 square =x square
144 + 196 = x square
340 = X square
340 square root= x
X=18.43

Answer 2

given=

m=12

n=14

$m^2+n^2=a^2$

$12^2+14^2=a^2$

$144+196=a^2$

$340=a^2$

$x=18.43$