Problem: If a 20"t.v. is 16" wide what is the height. the 20" t.v. refers to the diaganol of the sreen
The screen of a 20" t.v. refers rto the diagnol screen size, if the 20" t.v. has a width of 16" what is the height?
d^2 = w^2 + h^2
20^2 = 16^2 + h^2
20^2 - 16^2 = h^2
h^2 = 400 - 256
h^2 = 144
h = sqrt(144)
h = +12 and -12
We can ignore the negative height.
h = 12 inches