WSKT 212 PAC

3.3 Skryf die waardeversameling van die
funksie ( ) ( π )
P r = + 6 r+
20 neer.
3.4 Bereken die omtrek van die venster
indien die radius 35 cm is en toon
duidelik op die grafiek aan waar u
hierdie waarde sou aflees.
Die vorm van ‘n betonboog in die
struktuur van ‘n gebou word beskryf
deur die vergelyking
1
y x
4
2
=− + 7 .
Die vloer van die gebou (grondvlak)
word as die X-as gekies; alle
afmetings is in meter.
4.1 Skets die boog en toon sy hoogte en
die breedte van die basis duidelik
aan.
Vraag 4/ Question 4
92
Write down the range of the function
( ) ( π )
P r = + 6 r+
20.
Calculate the circumference of the
window when the radius is 35 cm and
clearly indicate on the graph where
you would read off this value.
The shape of a concrete arch in the
structure of a building is described by
1 2
the equation y =− x + 7 .
4
The floor of the building (ground
level) is taken as the X-axis; all
dimensions are given in meters.
Sketch the arch and clearly indicate its
height and the width of its base.