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Grade 8 Number & Operations
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Ratios, Proportions & Percents -Similarity Transformations
Question: Find the scale factor for the dilation.
A )
3
4
B )
3
2
C )
4
5
D )
2
3
Steps to derive
1
Scale factor =
N
e
w
l
e
n
g
t
h
O
r
i
g
i
n
a
l
l
e
n
g
t
h
2
=
22.50
15
= 1.5 =
3
2
[Substitute the values and simplify.]
3
So, the scale factor is
3
2
.
Hence the right answer is Option B
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