A triangle with side lengths $3 \mathrm{cm}, 4 \mathrm{cm}$ and $5 \mathrm{cm}$ is right-angled. If you enlarge this triangle, you get a similar triangle. Think about what type of triangle this is. Suggest possible side lengths for this triangle.

Find $A$, if the unknown area $A {\mathrm{cm}}^2$.

Find $A$, if the unknown area is $A {\mathrm{cm}}^2$.

Find $h$, if the length of the hypotenuse is $h \mathrm{cm}$.

Find $h$, if the length of the hypotenuse is $h \mathrm{cm}$.

Find $h$, if the length of the hypotenuse is $h \mathrm{cm}$.

Find $x$, if the length of the unknown side is $x \mathrm{cm}$.