Ariel has made a circular flower garden in her yard and she would like to put a plastic border around it. the garden has a radius of 8 feet. which expression could be used to find the length (in feet) of plastic border she will need to put around her garden?

She will need approximate of plastic border

Step-by-step explanation:

we know that

The circumference of a circle is equal to

In this problem we have

substitute

----> exact value of the length of plastic border

assume

---> approximate value of the length of plastic border

21

jk it's 20

step-by-step explanation:

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870