Question

What is the length of the diagonal from B to D of this rectangle? Round your answ

to the nearest tenth of a metre.

Answer 1

Answer: 19.7

Explanation:

By the Pythagorean theorem,

`(BD)^(2)=8^(2)+18^(2)\\\\(BD)^(2)=388\\\\BD=√(388) \approx \boxed{19.7}`