Question 132841
THE NORMAL MEASUREMENT OF A TV SET IS THE DIGONAL MEASUREMENT.
USING THE PYTHAGOROEN THERUM [A^2+B^2=C^2] WE GET:
12^2+X^2=15^2 
144+X^2=225
X^2=225-144
X^2=81
X=SQRT81`
X=9 INCHES IS THE HEIGHT OF THE TV.
PROOF
12^2+9^2=15^2
144+81=225
225=225