Alicia wrote these numbers:2,9,15,21.which of Alicia numbers is not a composite number?
2 answers:
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Let 
the length and 
the width. By the ratio of the sides:
Now, we'll find the perimeter p. We'll use the formula below:
The area of a rectangle is
. Then:
Now, we'll find the perimeter p. We'll use the formula below:
The area of a rectangle is
<u>Given</u>:
Given that the measure of arc DF is 162°
We need to determine the measure of ∠E
<u>Measure of ∠E:</u>
The measure of ∠E can be determined using the inscribed angle theorem.
Thus, by inscribed angle theorem, we have;
Substituting , we get;
Dividing, we get;
Thus, the measure of ∠E is 81°