Question

square television screen has a side length of 10 inches. What is the approximate length of the diagonal of the television screen?

Answer 1

I found: `14"in"`

Explanation:

Using Pythagoras Theorem you get:
`d^2=l^2+l^2=2l^2`
`d=sqrt(2l^2)=lsqrt(2)=10sqrt(2)=14"in"`