radius

Hello, What's the best way to cover the gap between the floor and the riser of the stairs, in particular, the radiused section of the stair risers. Some kind of timber moulding would be ideal, however, I am at a loss how to neatly cover the radiused section. Thankyou in advanced

If a 600 deep (30thk) worktop or sit-on sink have a roll front, then this means that they actually measure up as 615 deep, because of the radius, right? Thank you, Dain