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Students will use the geometric analogy such that if the area of a perfect square is represented by a square number, then the side length can be determined by taking the square root of the area. Example, the side length of a square that has an area of 400 would be 20.
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Measuring Lines... the hard way
Grade 8 MathematicsMr. J. Lingley
BrainteaserO T T
F F S
S ? ?
Fill in the missing letters in the logical sequence.
49 7
49 72
49 units2
?
7 u
49 u2 7
Area to Side Length• To find the side length of any square, you
find the square root of the area.
• If you know the side length, you can find the area, by simply squaring the side length. What are the side lengths of these squares?
16 36
25 36
?
25 36
~5.5
What if the square was like this...
Find the side length of this square.
What if the square was like this...
Instructions: 1. Find the area of the square.
2. Take the square to find the side length.
