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A sector of a circle of radius 42 cm subtends an angle of 1200 at the centre of the circle
a) Calculate
i)the area of the sector
ii)the length of the arc
b)The sector is folded into an inverted right cone. Calculate
i)the base radius of the cone
ii)to one decimal place the vertical height of the cone
c)Determine to 2 decimal places the capacity of the cone in litres (Take #pi=22/7#)