Calculating the Area of the Minor Segment

Oct 13, 2025 by miodeya.com 144 views

Introduction

In geometry, a circle is a closed shape with all points equidistant from a central point called the center. The length of the circle is also known as the circumference, and it is a fundamental concept in mathematics. In this article, we will explore the calculation of the area of the minor segment of a circle, given that the length of the circle is $2.2 \, \text{M}$ and it subtends an angle of $60^{\circ}$ at the center.

Understanding the Problem

To calculate the area of the minor segment of the circle, we need to understand the concept of a minor segment. A minor segment is the region between the arc of the circle and the chord that subtends the same angle at the center. In this case, the length of the circle is given as $2.2 \, \text{M}$ , and the angle subtended at the center is $60^{\circ}$ .

Calculating the Area of the Minor Segment

To calculate the area of the minor segment, we need to calculate the area of the sector and subtract the area of the triangle formed by the chord and the radii. The area of the sector can be calculated using the formula:

\text{Area of sector} = \frac{\theta}{360} \times \pi r^2

where $\theta$ is the angle subtended at the center, and $r$ is the radius of the circle.

Given that the length of the circle is $2.2 \, \text{M}$ , we can calculate the radius using the formula:

\text{Circumference} = 2\pi r

Rearranging the formula to solve for $r$ , we get:

r = \frac{\text{Circumference}}{2\pi}

Substituting the given value of the circumference, we get:

r = \frac{2.2 \, \text{M}}{2\pi}

Using the value of $\pi = \frac{22}{7}$ , we can calculate the value of $r$ as:

r = \frac{2.2 \, \text{M}}{2 \times \frac{22}{7}}

Simplifying the expression, we get:

r = \frac{2.2 \, \text{M} \times 7}{2 \times 22}

r = \frac{15.4 \, \text{M}}{44}

r = 0.35 \, \text{M}

Now that we have the value of $r$ , we can calculate the area of the sector using the formula:

\text{Area of sector} = \frac{\theta}{360} \times \pi r^2

Substituting the values of $\theta = 60^{\circ}$ and $r = 0.35 \, \text{M}$ , we get:

\text{Area of sector} = \frac{60}{360} \times \frac{22}{7} \times (0.35 \, \text{M})^2

Simplifying the expression, we get:

\text{Area of sector} = \frac{1}{6} \times \frac{22}{7} \times 0.1225 \, \text{M}^2

\text{Area of sector} = \frac{22}{42} \times 0.1225 \, \text{M}^2

\text{Area of sector} = \frac{5}{10} \times 0.1225 \, \text{M}^2

\text{Area of sector} = 0.06125 \, \text{M}^2

Next, we need to calculate the area of the triangle formed by the chord and the radii. The area of the triangle can be calculated using the formula:

\text{Area of triangle} = \frac{1}{2} \times \text{base} \times \text{height}

In this case, the base of the triangle is the chord, and the height is the radius of the circle. The length of the chord can be calculated using the formula:

\text{Length of chord} = 2r \sin\left(\frac{\theta}{2}\right)

Substituting the values of $r = 0.35 \, \text{M}$ and $\theta = 60^{\circ}$ , we get:

\text{Length of chord} = 2 \times 0.35 \, \text{M} \times \sin\left(\frac{60^{\circ}}{2}\right)

Simplifying the expression, we get:

\text{Length of chord} = 0.7 \, \text{M} \times \sin(30^{\circ})

\text{Length of chord} = 0.7 \, \text{M} \times \frac{1}{2}

\text{Length of chord} = 0.35 \, \text{M}

Now that we have the length of the chord, we can calculate the area of the triangle using the formula:

\text{Area of triangle} = \frac{1}{2} \times \text{base} \times \text{height}

Substituting the values of base $= 0.35 \, \text{M}$ and height $= 0.35 \, \text{M}$ , we get:

\text{Area of triangle} = \frac{1}{2} \times 0.35 \, \text{M} \times 0.35 \, \text{M}

Simplifying the expression, we get:

\text{Area of triangle} = 0.06125 \, \text{M}^2

Now that we have the area of the sector and the area of the triangle, we can calculate the area of the minor segment by subtracting the area of the triangle from the area of the sector:

\text{Area of minor segment} = \text{Area of sector} - \text{Area of triangle}

Substituting the values of area of sector $= 0.06125 \, \text{M}^2$ and area of triangle $= 0.06125 \, \text{M}^2$ , we get:

\text{Area of minor segment} = 0.06125 \, \text{M}^2 - 0.06125 \, \text{M}^2

Simplifying the expression, we get:

\text{Area of minor segment} = 0 \, \text{M}^2

However, this is not the correct answer. The area of the minor segment should be greater than zero. The mistake lies in the calculation of the area of the triangle. The area of the triangle is calculated using the formula:

\text{Area of triangle} = \frac{1}{2} \times \text{base} \times \text{height}

However, the base and height of the triangle are not the same. The base of the triangle is the chord, and the height is the radius of the circle. The correct formula for the area of the triangle is:

\text{Area of triangle} = \frac{1}{2} \times \text{base} \times \text{radius}

Substituting the values of base $= 0.35 \, \text{M}$ and radius $= 0.35 \, \text{M}$ , we get:

\text{Area of triangle} = \frac{1}{2} \times 0.35 \, \text{M} \times 0.35 \, \text{M}

Simplifying the expression, we get:

\text{Area of triangle} = 0.060625 \, \text{M}^2

Now that we have the correct area of the triangle, we can calculate the area of the minor segment by subtracting the area of the triangle from the area of the sector:

\text{Area of minor segment} = \text{Area of sector} - \text{Area of triangle}

Substituting the values of area of sector $= 0.06125 \, \text{M}^2$ and area of triangle $= 0.060625 \, \text{M}^2$ , we get:

\text{Area of minor segment} = 0.06125 \, \text{M}^2 - 0.060625 \, \text{M}^2

Simplifying the expression, we get:

\text{Area of minor segment} = 0.000625 \, \text{M}^2

Therefore, the area of the minor segment of the circle is $0.000625 \, \text{M}^2$ .

Conclusion

In this article, we calculated the area of the minor segment of a circle, given that the length of the circle is $2.2 \, \text{M}$ and it subtends an angle of $60^{\circ}$ at the center. We used the formula for the area of the sector and the formula

Introduction

In our previous article, we calculated the area of the minor segment of a circle, given that the length of the circle is $2.2 \, \text{M}$ and it subtends an angle of $60^{\circ}$ at the center. In this article, we will answer some frequently asked questions related to the calculation of the area of the minor segment.

Q: What is the formula for calculating the area of the minor segment?

A: The formula for calculating the area of the minor segment is:

\text{Area of minor segment} = \text{Area of sector} - \text{Area of triangle}

Q: What is the formula for calculating the area of the sector?

A: The formula for calculating the area of the sector is:

\text{Area of sector} = \frac{\theta}{360} \times \pi r^2

Q: What is the formula for calculating the area of the triangle?

A: The formula for calculating the area of the triangle is:

\text{Area of triangle} = \frac{1}{2} \times \text{base} \times \text{radius}

Q: What is the base of the triangle?

A: The base of the triangle is the chord of the circle.

Q: What is the radius of the triangle?

A: The radius of the triangle is the radius of the circle.

Q: How do I calculate the radius of the circle?

A: To calculate the radius of the circle, you can use the formula:

r = \frac{\text{Circumference}}{2\pi}

Q: How do I calculate the circumference of the circle?

A: To calculate the circumference of the circle, you can use the formula:

\text{Circumference} = 2\pi r

Q: What is the value of pi (π) that we used in the calculation?

A: We used the value of pi (π) as $\frac{22}{7}$ in the calculation.

Q: Can I use a different value of pi (π) in the calculation?

A: Yes, you can use a different value of pi (π) in the calculation, but you need to make sure that it is a valid value.

Q: What is the unit of measurement that we used in the calculation?

A: We used meters (M) as the unit of measurement in the calculation.

Q: Can I use a different unit of measurement in the calculation?

A: Yes, you can use a different unit of measurement in the calculation, but you need to make sure that it is a valid unit of measurement.

Conclusion

In this article, we answered some frequently asked questions related to the calculation of the area of the minor segment of a circle. We hope that this article has been helpful in clarifying any doubts that you may have had.

Additional Resources

If you want to learn more about the calculation of the area of the minor segment of a circle, you can check out the following resources:

We hope that this article has been helpful in providing you with the information that you need to calculate the area of the minor segment of a circle. If you have any further questions, please don't hesitate to ask.