Proportional Scaling
SSAT Middle Level Quantitative · Flashcards · Recall
SSAT MIDDLE LEVEL QUANTITATIVE · FLASHCARDS
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QUESTION
What is the scale factor from an original length
L
L
L
to a new length
L
′
L'
L
′
?
QUESTION
What is the scale factor
k
k
k
if a model is
1
25
\frac{1}{25}
25
1
of the actual object in every length?
QUESTION
What is the rule for how perimeter changes under a scale factor
k
k
k
?
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ANSWER
Perimeter multiplies by
k
k
k
. Since perimeters are sums of linear dimensions, they scale by the factor
k
k
k
.
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