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10 grade maths

Find the area of the shaded region in the following figure:

A. 28.45 sq. cm

B. 113.6 sq. cm

C. 59.8 sq. cm

D. 46.88 sq. cm

Profile image of Aniket Singh
1 Year agoGrade
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1 Answer

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ApprovedApproved Tutor Answer1 Year ago

To find the area of the shaded region in the figure you've mentioned, we first need to understand the shapes involved and how they relate to one another. Although I can't see the figure, I can guide you through a general approach to solving area problems involving shaded regions.

Identifying the Shapes

Typically, shaded regions are formed by subtracting the area of one shape from another. For example, if the shaded area is between a larger shape (like a rectangle or a circle) and a smaller shape (like a circle or a square), we can find the area of each shape and then perform a subtraction.

Step-by-Step Calculation

  • Calculate the Area of the Larger Shape: Use the appropriate formula based on the shape. For instance, the area of a rectangle is length times width, while the area of a circle is π times the radius squared.
  • Calculate the Area of the Smaller Shape: Again, apply the relevant formula for the smaller shape.
  • Subtract the Smaller Area from the Larger Area: This will give you the area of the shaded region.

Example Calculation

Let’s say the larger shape is a rectangle with dimensions 10 cm by 8 cm, and the smaller shape is a circle with a radius of 3 cm. Here’s how you would find the area:

  • Area of the rectangle = 10 cm × 8 cm = 80 sq. cm
  • Area of the circle = π × (3 cm)² ≈ 3.14 × 9 = 28.26 sq. cm
  • Area of the shaded region = Area of rectangle - Area of circle = 80 sq. cm - 28.26 sq. cm ≈ 51.74 sq. cm

Choosing the Correct Option

Once you have calculated the area of the shaded region, compare your result with the options provided: A. 28.45 sq. cm B. 113.6 sq. cm C. 59.8 sq. cm D. 46.88 sq. cm. In our example, if the calculated area was around 51.74 sq. cm, it would not match any of the options, indicating that either the dimensions or the shapes need to be re-evaluated.

Final Thoughts

Make sure to double-check your calculations and the dimensions of the shapes involved. If you can provide more details about the specific shapes and their measurements, I can help you refine the calculations further. Understanding the relationship between the shapes is key to accurately determining the area of the shaded region.