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Enlarging road signs
This task is about scale factors and enlargement.
Question
1
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a)
In the photograph of the GIVE WAY sign, the length of one side is 2 cm. The length of that same side on the actual street sign is 60 cm.
Photograph
measurements
Actual street sign measurements
[Not drawn to scale]
i)
ii)
What is the scale factor for this enlargement?
The length of another side of the sign in the photograph is 3 cm.
What would be the length of this same side on the actual street sign?
x
=
cm.
Question
1
Change answer
b)
In the photograph of the STOP sign, the length of one side of the sign is 2 cm. The length of that same side on the actual street sign is 20 cm.
Photograph
measurements
Actual street sign measurements
[Not drawn to scale]
b)
In the photograph of the STOP sign, the length of one side of the sign is 2 cm. The length of that same side on the actual street sign is 20 cm.
Photograph
measurements
Actual street sign measurements
[Not drawn to scale]
i) What is the scale factor for this enlargement?
ii) The area of the actual street sign is 2000 cm
2
What do you need to divide this number by to get the area of the street sign in the photograph?
cm.
Published on
Assessment Resource Banks
(
https://arbs.nzcer.org.nz
)