SOLUTION: Please help answer this question:
The diagonal of a square television screen measures 18 inches. What is the length of the sides?
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Question 79392: Please help answer this question:
The diagonal of a square television screen measures 18 inches. What is the length of the sides?
Answer by tutorcecilia(2152) (Show Source): You can put this solution on YOUR website!
Use the formula for the Pythagorean Theorem to solve because the television screen forms two right triangles.
a^2+b^2=c^2
a=one side = x
b=the other side = x [because the TV screen is a square -- all sides are equal]
c=the hypotenuse = the diagonal = 18
.
Plug-in the values and solve:
a^2+b^2=c^2
x^2+b^2=18^2
2x^2=18^2
2x^2=324
2x^2/2=324/2
x^2=162
=
x=12.7279=12.73
.
Check by plugging all of the values back into the original formula:
a^2+b^2=c^2
(12.7279)^2+(12.729)^2=18^2
324.054=324 [close-enough]
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