Data:
Formula: diameter = 2*radius
Formula: (<span>Circle length)
</span>

<span>
Solving: </span><span>Using the data
</span>diameter = 2*radius
20 = 2*r
2r = 20


<span>Now, replace in the circumference length formula
</span>



Answer:
<span>
The exact circumference of the circle is </span>
9 because the square root of 81 is 9
The value of 4 in the 400 is ten times the value of 4 in the 40's place
Answer:
positive
Step-by-step explanation: