Australian 14-year-old Arisa Trew has won gold in the women's park event in the skateboarding program at the Paris Olympics. Key Events Day 12 schedule Tue 6 Aug Medal tally Tue 6 Aug Boxing: Algeria's Imane Khelif through to gold medal bout in women's 66kg Tue 6 Aug Show all key events Australia's medals on day 11 J By Jon …