SOLUTION: how do i find the height and width of a tv screen with a diagnal length of 42" and a width: height ration of 4:3

Question 392996: how do i find the height and width of a tv screen with a diagnal length of 42" and a width: height ration of 4:3
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
how do i find the height and width of a tv screen with a diagonal length of 42"
and a width: height ration of 4:3
:
Let x = the multiplier
:
Using pythag:
(3x)^2 + (4x)^2 = 42^2
:
9x^2 + 16x^2 = 1764
25x^2 = 1764
Find the square root of both sides
5x = 42
x =
x = 8.4 is the multiplier
:
Find the length and width
4*8.4 = 33.6 is the length
3*8.4 = 25.2 is the width
:
:
Check the solution, find the hypotenuse on a calc, enter

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