kg/m3 …………………………… (2) The density of zinc is 7130 kg/m3. (b) Work out the mass of 5 m3 of zinc. kg ………………………… (2) (Total 4 marks) Question 2 is an arc of the circle. PQ Angle = 120 POQ (a) Write down an expression in terms of and for x (i) the area of this sector, ................................ (ii) the arc length of this sector. ................................ (2) Question 3 (Total 4 marks) Total / 10
…………………………… kg/m3 (2) The density of zinc is 7130 kg/m3. (b) Work out the mass of 5 m3 of zinc. ………………………… kg (2) (Total 4 marks) Question 2 PQ is an arc of the circle. Angle POQ = 120 (a) Write down an expression in terms of and x for (i) the area of this sector, ................................ (ii) the arc length of this sector. ................................ (2) Question 3 (Total 4 marks) Total / 10