(a) Using a ruler and a pair of compasses only, construct triangle ABC with /AB/ = 7.5cm, /BC/ = 8.1cm and < ABC = 105^\circ. (b) Locate a point D on BC such that /BD/ : /DC/ is 3 : 2. (c) Through D, construct a line I perpendicular to BC. (d) If the line I meets AC at P, measure /BP/.