GCSE Maths Practice: pythagoras-theorem

\( \begin{array}{l}\text{Which formula finds the space diagonal of a cuboid with length } l, \text{ width } w, \text{ and height } h?\end{array} \)

Choose one option:

\( \sqrt{l^2 + w^2 + h^2} \) \( \sqrt{l^2 + w^2} \) \( \sqrt{l \times w \times h} \) \( \sqrt{l^2 - w^2 - h^2} \)