Typically Geometry. But it depends on your level.
Take the root of both sides, and then solve.
c = sqrt a^2 + b^2, - sqrt a^2 + b^2.
Not sure for the others but a is 55 cause ps is half a circle witch is 180 and pt is 125 so just subtract 180 - 125 =55
Answer:
let p(x)=180
LCM=720
HCF=36
WE HAVE TO FIND q(x)=?
as we know that
p(x)×q(x)=LCM×HCF
NOW WE HAVE TO FIND q(x)
q(x)=LCM×HCF/p(x)
q(x)=720×36/180
q(x)=25920/180
q(x)=144
i hope this will help you