A regular regular pentagon has an apothem measuring 3 cm and a perimeter of 21.8 cm. What is the area of the pentagon, rounded t
o the nearest tenth?
2 answers:
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Answer:
<u>The lengths of side A is 22.4 and B is 11.9</u>.
Step-by-step explanation:
Given:
If side A is twice as long as B and C is 25 using the Pythagorean Theorem.
Now, to find the lengths of side A and B.
Let the side B be
So, the side A be
Side C = 25.
Now, to solve by using Pythagorean Theorem:
A² + B² = C²
<em>Dividing both sides by 5 we get:</em>
<em>Using square root on both sides we get:</em>
<u>B rounding to the nearest tenth = 11.9.</u>
Now, to get A by substituting the value of :
<u>A rounding to the nearest tenth = 22.4.</u>
Therefore, the lengths of side A is 22.4 and B is 11.9.