multi engine class b Landing

#1. The Landing Distance Available at an aerodrome is 2,500 feet. For a Class B aircraft, what distance should be used in the landing distance graph to obtain the maximum permissible landing weight, if the runway, if the runway has a paved wet surface with a 1% downhill slope?

#2. A runway is contaminated with 0.5 cm of wet snow. Nevertheless the flight manual of a light twin authorises a landing in these conditions. The landing distance will be, in relation to that for a dry runway.

#3. For this question use Performance Manual CAP 698 MEP 1 Figure 3.9. With regard to the normal landing chart for the multi engine aeroplane determine the landing distance from a height of 50 ft. Given :- O.A.T : 30°C. Pressure Altitude : 0 ft. Aeroplane Mass : 4,500 Ibs. Headwind component : 10 kt. Flaps : 40°. Runway : paved , level and dry.