Question

The diagram shows a box $ABCDEFGH$ in the shape of a cuboid measuring $2m$ by $1.5m$ by $1.7m$.
Calculate the length of the diagonal $EC$

Answer 1

$\begin{array}{c}Lengthofdiagonal\\ =\sqrt{2^2+{1.5}^2+{1.7}^2}\\ =\sqrt{4+2.25+2.89}\\ =\sqrt{9.14}\\ =3.02m\end{array}$

Hence, this is the answer.