I cut a long piece of wood into 50cm pieces I manage to cut w pieces of wood and there is 20 cm left over how long was the wood and there is 20cm left over . How long was the wood to start with

First work with stencil one. use a combination of reflections, rotations, and translations to see whether stencil one will overlap with the original pattern. list the sequence of rigid transformations you used in your attempt, noting the type of transformation, the direction, the coordinates, and the displacement