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xeze [42]
2 years ago
13

The circumference of a circle is 23π m. What is the area, in square meters? Express your answer in terms of \piπ

Mathematics
2 answers:
NARA [144]2 years ago
7 0

Answer:

<h2>132.25π  m²</h2>

Step-by-step explanation:

The circumference of a circle is 23π

On the other hand, The circumference of a circle = 2×π×r ; where r is the radius.

then

by equating the last two expressions we get: 23π = 2πr then r = 23/2

then

the area = π × r² = (23/2)²×π = (132.25)×π

Firdavs [7]2 years ago
4 0

Answer:

132.25\pi square meters

Step-by-step explanation:

The first step is to find the radius of the circle. The diameter of the circle is just the circumference divided by pi, so the diameter is 23. The radius is half of the diameter, or 23/2=11.5. Now, plugging this into the formula for the area of a circle, you get \pi \cdot 11.5^2=132.25\pi square meters. Hope this helps!

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In circle O, what is m∠MAJ?
ira [324]

we know that

The measure of the interior angle is the half-sum of the arcs comprising it and its opposite.

so

<u>Find the measure of the angle LAM</u>

m∠LAM is equal to

\frac{1}{2}*[arc\ KJ+arc\ LM]= \frac{1}{2}*[170+80]\\\\=125\ degrees

<u>Find the measure of the angle MAJ</u>

we know that

m∠LAM+m∠MAJ=180° ------> by supplementary angles

m∠MAJ=(180-125)

m∠MAJ=55°

therefore

<u>the answer is</u>

The measure of the angle MAJ is 55\ degrees

6 0
2 years ago
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OlgaM077 [116]

Answer:

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<em><u>Hope this helps.</u></em>

8 0
2 years ago
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