A school library has the aquarium shown. The front piece of glass has an area of 7200 cm2. The top of the aquarium is open and the bottom is glass. ⦁ How many square metres of glass were used to build the aquarium? [5 marks]

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.