Math Problem Statement

Follow the steps to find the area of the shaded region. The sector area is 72.0472 cm² and the triangle area is 24.8688 cm². Subtract the triangle area from the sector area to find the shaded region.

Solution

The image shows a problem where we are asked to find the area of the shaded region in a sector of a circle. The sector area and the triangle area are provided, and we need to subtract the triangle area from the sector area to get the shaded region.

Given:

  • Sector Area = 72.0472cm272.0472 \, \text{cm}^2
  • Triangle Area = 24.8688cm224.8688 \, \text{cm}^2

The area of the shaded region can be found by:

Shaded Area=Sector AreaTriangle Area\text{Shaded Area} = \text{Sector Area} - \text{Triangle Area}

Now, let's calculate that.The area of the shaded region is 47.1784cm247.1784 \, \text{cm}^2, rounded to four decimal places.

Do you want any further details or have any questions?

Here are 5 related questions to deepen your understanding:

  1. How is the sector area of a circle calculated?
  2. What formula is used to find the area of a triangle in this context?
  3. How would the result change if the central angle of the sector were different?
  4. What is the relationship between the triangle and the sector in terms of geometry?
  5. How can this approach be applied to find shaded areas in other geometric figures?

Tip: When working with sectors, always ensure the angle is in the correct unit (degrees or radians) when applying formulas.

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Math Problem Analysis

Mathematical Concepts

Geometry
Circle Sectors
Triangle Areas
Shaded Region

Formulas

Area of the sector = (θ / 360) × π × r²
Area of a triangle = 1/2 × base × height
Shaded area = Sector area - Triangle area

Theorems

Central Angle Theorem
Area of Sector
Basic Triangle Area Formula

Suitable Grade Level

Grades 9-10