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$20\,\text{cm}, 80\,\text{cm}$

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Factor polynomials

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Q.

20\,\text{cm}, 80\,\text{cm}

Identify numbers: Identify the numbers to find the GCD for: $20$ and $80$ .
List factors of $20$ : List the factors of $20$ : $1$ , $2$ , $4$ , $5$ , $10$ , $20$ .
List factors of $80$ : List the factors of $80$ : $1$ , $2$ , $4$ , $5$ , $8$ , $10$ , $16$ , $20$ , $40$ , $80$ .
Find largest common factor: Find the largest common factor of both lists: The largest common factor is $20$ .
State the GCD: State the GCD of $20\,\text{cm}$ and $80\,\text{cm}$ is $20\,\text{cm}$ .

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