Scale Factor Effects
Pre-Algebra · Flashcards
PRE-ALGEBRA · FLASHCARDS
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QUESTION
A figure is scaled by a factor of
k
k
k
. By what factor is its perimeter multiplied?
QUESTION
Every side of a figure with area 5 square feet is doubled. What is the new area?
QUESTION
A triangle with area 48 square feet is scaled by a factor of
1
2
\frac{1}{2}
2
1
. What is the new area?
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ANSWER
12 square feet. Area scales by
(
1
2
)
2
=
1
4
\left(\frac{1}{2}\right)^2 = \frac{1}{4}
(
2
1
)
2
=
4
1
:
48
×
1
4
=
12
48 \times \frac{1}{4} = 12
48
×
4
1
=
12
.
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