8. Aflight of 6 steps leads to Leonie's front door. Each step is 20cm high. She needs to build a amp to provide wheelchair access to her front door. If the ramp is 4m long, how much horizontal ground would it cover, if it were to be placed over the steps? 9. What is the distance between the points (2,5) and (1,9) on a coordinate grid with 1cm squares? 10. The area of a right-angled isosceles triangle is 8cm?. What is its perimeter? 11. Give the coordinates of 6 points which are 5cm from (1,1) on a coordinate grid with l1cm sgquares. 12. A rectangular field is 100m wide and 200m long. Joyce runs along one of the widths, the following length and then along the diagonal where she started. She repeats this circuit 20 times. During her run, her telephone rings. What is the probability that it rings when she is running along the diagonal? Give your answer to 2 decimal places. 13. The ratio of side lengths in a right-angled triangle is 3:8:y. Give two possible values of y