6.1.2 Surface area = 2 ( 12 × 6 ) + 2 ( 15 × 6 ) + 2 ( 12 × 15 ) = 684 c m 2


Volume = 12 × 6 × 15 = 1 080 c m 3


6.2.1 Volume of metal removed by the drill = π × 2 2 × 11 = 138,23 m m 3


6.2.2 Volume of metal in the collar = π × 4 2 × 11 − 138,23 = 414,69 m m 3


Question 7 7.1


7.2 − 7.4 (2) (3)


(2) [9]


( 1;1 ) ( 1;6 ) ( 4;6 ) (4;1) (1)


D


A


C


B


(3) 7.5 A rotation through 180° around the origin.


Question 8 8.1


(1) [5]


Continuous data 8.2 3 237 000 people


8.3 The population of Gauteng 8.4 8.5


75 − 100 MB Data usage in Gauteng


(1) (1) (1) (1)


> 150 MB per moth Chapter 17: Programme of Assessment (3) 353


Frequency (thousands)


CHAPTER 17


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