radius

Folks, despite being a whizz at maths when I was at school, getting both O and A levels, and geometry being my strong point then... it was nearly 50 years ago and I cant remember how to do this... I need to make a couple of circular templates out of card for a small woodwork project... I know...

Hi all Trying to find a diagram to help me get 4mm SWA around an external bend. Want to run the cable along the side wall and then along the back of the house. I'm aware of the bend radius so can just sweep naturally otherwise we would bulge the cable out. I've seen a description of making 2 X...