Question
deltamath.com DeltaMath Student Application SNAKE - Google Search Question Watch Video Show Examples In circle B with \( m \angle A B C=112^{\circ} \) and \( A B=17 \), find the area of sector ABC . Round to the nearest hundredth.
Ask by Hobbs Estrada. in the United States
Mar 11,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The area of sector ABC is approximately 282.74 square units.
Solution
Let the circle have center \( B \). Since \( A \) lies on the circle, the distance \( AB \) is the radius of the circle, so
\[
r = 17.
\]
The central angle \( \angle ABC \) is given as
\[
112^\circ.
\]
The area \( A_{\text{sector}} \) of a sector with central angle \( \theta \) (in degrees) and radius \( r \) is given by
\[
A_{\text{sector}} = \frac{\theta}{360} \pi r^2.
\]
Substitute the given values:
\[
A_{\text{sector}} = \frac{112}{360} \pi (17)^2.
\]
Calculate \( 17^2 \):
\[
17^2 = 289.
\]
Thus,
\[
A_{\text{sector}} = \frac{112}{360} \pi \cdot 289.
\]
Simplify the fraction \(\frac{112}{360}\) by dividing the numerator and the denominator by \(8\):
\[
\frac{112}{360} = \frac{14}{45}.
\]
Now the area becomes:
\[
A_{\text{sector}} = \frac{14 \cdot 289 \pi}{45}.
\]
Multiply \(14 \times 289\):
\[
14 \times 289 = 4046.
\]
So,
\[
A_{\text{sector}} = \frac{4046\pi}{45}.
\]
Now, compute the decimal approximation:
\[
\frac{4046}{45} \approx 89.91,
\]
so
\[
A_{\text{sector}} \approx 89.91 \pi.
\]
Using \(\pi \approx 3.14159\):
\[
A_{\text{sector}} \approx 89.91 \times 3.14159 \approx 282.74.
\]
Thus, the area of sector \(ABC\) is approximately
\[
\boxed{282.74}.
\]
Answered by UpStudy AI and reviewed by a Professional Tutor
Like
error msg


Mind Expander
To find the area of sector ABC in circle B, we can use the formula for the area of a sector: \[ \text{Area} = \frac{m \angle}{360} \times \pi r^2 \] Here, \( m \angle A B C = 112^{\circ} \) and the radius \( AB = 17 \). Plugging in the values: \[ \text{Area} = \frac{112}{360} \times \pi \times (17)^2 \] Calculating \( 17^2 = 289 \): \[ \text{Area} \approx \frac{112}{360} \times \pi \times 289 \approx \frac{112}{360} \times 908.64 \approx 85.345 \] Finally, rounding to the nearest hundredth gives us: \[ \text{Area} \approx 85.35 \text{ square units.} \]