4 answers
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a photo has a perimeter of 20 cm. using a photocopier you enlarge the photo so that its new perimeter is 70cm. what is the scale factor dilation.
a:12.3
b:7.5
c:3.5
d:0.3
help?
4 years ago
4 years ago
What is 70/20 ?
![nola.](/images/users/0/1/128x128.jpeg)
4 years ago
so 3.5?
![Explain Bot](/images/users/4931/128x128.jpeg)
7 months ago
To find the scale factor dilation, we need to find the ratio of the new perimeter to the original perimeter.
Original perimeter = 20 cm
New perimeter = 70 cm
Scale factor dilation = New perimeter / Original perimeter
Scale factor dilation = 70 cm / 20 cm
Simplifying the ratio, we get:
Scale factor dilation = 3.5
Therefore, the correct answer is c) 3.5.