SOLUTION: A 31-inch-square TV is on sale at the local electronics store. If 31 inches measure of the diagonal of the screen, use the Pythagorem to find the legnth of the side of the screen.

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons  -> Linear Equations Lesson -> SOLUTION: A 31-inch-square TV is on sale at the local electronics store. If 31 inches measure of the diagonal of the screen, use the Pythagorem to find the legnth of the side of the screen.      Log On


   

Question 252392: A 31-inch-square TV is on sale at the local electronics store. If 31 inches measure of the diagonal of the screen, use the Pythagorem to find the legnth of the side of the screen.
Found 2 solutions by richwmiller, edjones:
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
a^2+b^2=c^2
where a=b and c=31
2a^2=31^2
2a^2=961
a=31/sqrt(2)=21.9203

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
Let a=one of the sides
2a^2=31^2 Pythagoras
a^2=961/2=480.5
a=21.92"
.
Ed