Scale Factor and Scale Drawings
Flashcard
•
Mathematics
•
7th - 8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a scale drawing?
Back
A scale drawing is a representation of an object or area that is proportionally reduced or enlarged to fit on paper, using a specific scale.
2.
FLASHCARD QUESTION
Front
What does scale factor mean?
Back
Scale factor is the ratio of the length in a scale drawing to the corresponding length in the actual object.
3.
FLASHCARD QUESTION
Front
If a scale drawing uses a scale of 1:100, what does this mean?
Back
It means that 1 unit on the drawing represents 100 units in reality.
4.
FLASHCARD QUESTION
Front
How do you calculate the actual length from a scale drawing?
Back
Multiply the length in the scale drawing by the scale factor.
5.
FLASHCARD QUESTION
Front
What is the formula for the perimeter of a rectangle?
Back
Perimeter = 2(length + width).
6.
FLASHCARD QUESTION
Front
If the original perimeter of a rectangle is 30 cm and the scale factor is 4, what is the new perimeter?
Back
New perimeter = 30 cm x 4 = 120 cm.
7.
FLASHCARD QUESTION
Front
How do you find the width of an object in a scale drawing?
Back
Use the scale to convert the actual width to the drawing width by dividing the actual width by the scale factor.
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