Find the circumference given the area = 437.4 in². Use 3.14 for π as necessary.
2 answers:
Answer:
Circumference = 74.2924 inches.
Step-by-step explanation:
Given : area = 437.4 in².
To find : Find the circumference .
Solution : We have given area = 437.4 in².
Area = π (radius)².
π (radius)² = 437.4 in².
3.14 (radius)² = 437.4 in².
On dividing both sides by 3.14
(Radius)² = .
(Radius)² = 139.299.
On taking square root both sides
Radius = 11. 83 inches
Circumference = 2 * π * radius .
Plug the values
Circumference = 2 * 3.14 * 11.83 .
Circumference = 74.2924 inches.
Therefore, Circumference = 74.2924 inches.
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Answer:
The Cohen's D is given by this formula:
Where represent the deviation pooled and we know from the problem that:
represent the pooled variance
So then the pooled deviation would be:
And the difference of the two samples is , and replacing we got:
And since the value for D obtained is 0.5 we can consider this as a medium effect.
Step-by-step explanation:
Previous concepts
Cohen’s D is a an statistical measure in order to analyze effect size for a given condition compared to other. For example can be used if we can check if one method A has a better effect than another method B in a specific situation.
Solution to the problem
The Cohen's D is given by this formula:
Where represent the deviation pooled and we know from the problem that:
represent the pooled variance
So then the pooled deviation would be:
And the difference of the two samples is , and replacing we got:
And since the value for D obtained is 0.5 we can consider this as a medium effect.