circumference of a circle=2πr
area=πr²
1) we calculate the radius of this circle.
Data:
area=9π m²
area=πr²
9π m²=πr²
r²=9π m² / π
r²=9 m²
r=√(9 m²)=3 m
2) we calculate the circumference:
circumference=2πr=2π(3 m)=6π m
Answer: the circumference is 6π m
The correlation based on the computation is 0.97.
<h3>How to compute the value?</h3>
It should be noted that the question is that we should simply calculate the correlation which is r.
The correlation will be:
= Σ(x y) / (Σ(x²) × Σ(y²)
= 9627/✓(1118 × 87982)
= 9627 ✓98363876
= 9627/9917.86
= 0.97
Learn more about computations on:
brainly.com/question/4658834
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Answer:
Jessica has $13,80 and Sarah has $58.20.
Step-by-step explanation:
Let j be the amount of money that Jessica has.
Let s be the amount of money that Sarah has.
s + j = 72
Since Sarah has 3 more than 4 times what Jessica has...
s = 4j + 3
So 4j + 3 + j = 72
5j = 69
j = 13.8
So Jessica has $13,80.
Therefore Sarah has $58.20.
Answer: because shes right
Step-by-step explanation:
