Constructions
Step 1 – draw the locus of points 10km from Town A. Step 2 – draw the locus of points 8km from Town B. Step 3 – shade the region where the two circles intersect. These are the points that are no more than 10km from Town A and no more than 8km from Town B. E.g. Here is a scale drawing of a garden. The scale is 1cm to 2m.