In circle K with m, angle, J, K, L, equals, 46, degreesm∠JKL=46∘

and J, K, equals, 11JK=11, find the area of sector JKL. Round to the nearest hundredth.

1 answer

To find the area of sector \( JKL \) in circle \( K \), we use the formula for the area of a sector, which is given by:

\[ \text{Area} = \frac{\theta}{360} \times \pi r^2 \]

where \( \theta \) is the angle in degrees and \( r \) is the radius of the circle.

In this case:

  • The angle \( \theta = m∠JKL = 46^\circ \).
  • The length \( JK = 11 \) will be used as the radius \( r \) of the circle.

Substituting the given values into the formula, we get:

\[ \text{Area} = \frac{46}{360} \times \pi \times 11^2 \]

Calculating \( 11^2 \):

\[ 11^2 = 121 \]

Now we substitute this back into the equation:

\[ \text{Area} = \frac{46}{360} \times \pi \times 121 \]

Calculating \( \frac{46}{360} \):

\[ \frac{46}{360} = \frac{23}{180} \]

Therefore, the area becomes:

\[ \text{Area} = \frac{23}{180} \times \pi \times 121 \]

Now, we can calculate this:

\[ \text{Area} \approx \frac{23 \times 121}{180} \times \pi \]

Calculating \( 23 \times 121 \):

\[ 23 \times 121 = 2783 \]

Next, we divide by 180:

\[ \frac{2783}{180} \approx 15.5167 \]

Now, multiply by \( \pi \) (using \( \pi \approx 3.14159 \)):

\[ \text{Area} \approx 15.5167 \times 3.14159 \approx 48.758 \]

Rounding this to the nearest hundredth:

\[ \text{Area} \approx 48.76 \]

Therefore, the area of sector \( JKL \) is approximately:

\[ \boxed{48.76} \]