Question

Rectangle has a width 9 of units and a length of 40 unit is.what is the length of a diagonal?

Answer 1

`\boxed{\sf \ \ \ diagonal \ length \ = \ 41 \ \ \ }`

Explanation:

Thanks to Pythagoras we can say that

l being the length of the diagonal

`l =√(9^2+40^2)=√(81+1600)=√(1681)=41`