We are asked to find the area of the shaded sector of a circle. The circle has a radius of $2$ meters, and the central angle of the sector is $51$ degrees. We need to round the answer to the nearest tenth.

GeometryAreaCircleSectorAngleRadiusApproximationUnits
2025/4/14

1. Problem Description

We are asked to find the area of the shaded sector of a circle. The circle has a radius of 22 meters, and the central angle of the sector is 5151 degrees. We need to round the answer to the nearest tenth.

2. Solution Steps

The area of a sector of a circle is given by the formula:
Area=θ360πr2Area = \frac{\theta}{360} \pi r^2
where θ\theta is the central angle in degrees, and rr is the radius of the circle. In this case, θ=51\theta = 51 degrees and r=2r = 2 meters.
Substituting these values into the formula, we get:
Area=51360π(2)2Area = \frac{51}{360} \pi (2)^2
Area=51360π(4)Area = \frac{51}{360} \pi (4)
Area=514π360Area = \frac{51 \cdot 4 \cdot \pi}{360}
Area=204π360Area = \frac{204 \pi}{360}
Area=17π30Area = \frac{17 \pi}{30}
Now, we can approximate π\pi as 3.141593.14159:
Area=17×3.1415930Area = \frac{17 \times 3.14159}{30}
Area=53.4060330Area = \frac{53.40603}{30}
Area=1.780201Area = 1.780201
Rounding to the nearest tenth, we get 1.81.8.

3. Final Answer

The area of the shaded sector is 1.81.8 m2m^2.

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