Write the formula to calculate the area of a kite having the length of the diagonals d1 cm and d2 cm

Oct 13, 2025 by wbrum.org 114 views

The radius of a circular pond is 35 m. There is a path 3.5 m wide running outside the pond. Find the area of the path.

In this problem, we are given a circular pond with a radius of 35 m and a path 3.5 m wide running outside the pond. We need to find the area of the path. To do this, we will first calculate the area of the larger circle that includes the path and then subtract the area of the pond from it.

Step 1: Calculate the Area of the Larger Circle

The area of a circle is given by the formula:

A = πr^2

where A is the area and r is the radius of the circle.

In this case, the radius of the larger circle is the sum of the radius of the pond and the width of the path:

r = 35 m + 3.5 m = 38.5 m

Now, we can calculate the area of the larger circle:

A = π(38.5 m)^2

A ≈ 4671.93 m^2

Step 2: Calculate the Area of the Pond

The area of the pond is given by the formula:

A = πr^2

where A is the area and r is the radius of the pond.

In this case, the radius of the pond is 35 m:

A = π(35 m)^2

A ≈ 3841.59 m^2

Step 3: Calculate the Area of the Path

The area of the path is the difference between the area of the larger circle and the area of the pond:

A = A (larger circle) - A (pond)

A ≈ 4671.93 m^2 - 3841.59 m^2

A ≈ 830.34 m^2

Therefore, the area of the path is approximately 830.34 m^2.

Write the formula to calculate the area of a kite having the length of the diagonals d1 cm and d2 cm

A kite is a quadrilateral with two pairs of adjacent sides that are equal in length. It has two diagonals that intersect at right angles. In this problem, we are given the length of the diagonals of a kite and we need to find the formula to calculate the area of the kite.

Step 1: Understand the Properties of a Kite

A kite has two pairs of adjacent sides that are equal in length. Let's call the length of the sides a and b. The diagonals of a kite intersect at right angles and bisect each other. Let's call the length of the diagonals d1 and d2.

Step 2: Calculate the Area of the Kite

The area of a kite can be calculated using the formula:

A = (d1 * d2) / 2

where A is the area and d1 and d2 are the length of the diagonals.

This formula is derived from the fact that the diagonals of a kite bisect each other and intersect at right angles. The area of the kite is equal to half the product of the lengths of the diagonals.

In this problem, we have found the area of the path around a circular pond and written the formula to calculate the area of a kite having the length of the diagonals d1 cm and d2 cm. The area of the path is approximately 830.34 m^2 and the formula to calculate the area of a kite is A = (d1 * d2) / 2.

[1] Khan Academy. (n.d.). Area of a circle. Retrieved from https://www.khanacademy.org/math/geometry/area-of-figures/area-of-a-circle/v/area-of-a-circle
[2] Math Open Reference. (n.d.). Kite. Retrieved from https://www.mathopenref.com/kite.html

A = πr^2 : Area of a circle
A = (d1 * d2) / 2 : Area of a kite

Circle : A set of points that are all equidistant from a central point called the center.
Kite : A quadrilateral with two pairs of adjacent sides that are equal in length.
Diagonal : A line segment that connects two non-adjacent vertices of a polygon.
Frequently Asked Questions (FAQs) =====================================

Q: What is the formula to calculate the area of a circle?

A: The formula to calculate the area of a circle is A = πr^2, where A is the area and r is the radius of the circle.

Q: How do I calculate the area of a kite?

A: To calculate the area of a kite, you need to know the length of the diagonals. The formula to calculate the area of a kite is A = (d1 * d2) / 2, where A is the area and d1 and d2 are the length of the diagonals.

Q: What is the difference between a circle and a kite?

A: A circle is a set of points that are all equidistant from a central point called the center. A kite, on the other hand, is a quadrilateral with two pairs of adjacent sides that are equal in length.

Q: Can I use the formula for the area of a circle to calculate the area of a kite?

A: No, you cannot use the formula for the area of a circle to calculate the area of a kite. The formula for the area of a circle is A = πr^2, while the formula for the area of a kite is A = (d1 * d2) / 2.

Q: What is the significance of the diagonals in a kite?

A: The diagonals of a kite intersect at right angles and bisect each other. This means that the diagonals divide the kite into two congruent triangles.

Q: Can I use the formula for the area of a kite to calculate the area of a circle?

A: No, you cannot use the formula for the area of a kite to calculate the area of a circle. The formula for the area of a kite is A = (d1 * d2) / 2, while the formula for the area of a circle is A = πr^2.

Q: What is the relationship between the area of a circle and the area of a kite?

A: There is no direct relationship between the area of a circle and the area of a kite. The area of a circle is calculated using the formula A = πr^2, while the area of a kite is calculated using the formula A = (d1 * d2) / 2.

Q: Can I use the formula for the area of a circle to calculate the area of a polygon with more than four sides?

A: No, you cannot use the formula for the area of a circle to calculate the area of a polygon with more than four sides. The formula for the area of a circle is A = πr^2, while the formula for the area of a polygon with more than four sides is more complex and depends on the number of sides and the lengths of the sides.

Q: What is the significance of the radius of a circle?

A: The radius of a circle is the distance from the center of the circle to any point on the circumference of the circle. It is an important concept in geometry and is used to calculate the area and circumference of a circle.

Q: Can I use the formula for the area of a kite to calculate the area of a polygon with more than four sides?

A: No, you cannot use the formula for the area of a kite to calculate the area of a polygon with more than four sides. The formula for the area of a kite is A = (d1 * d2) / 2, while the formula for the area of a polygon with more than four sides is more complex and depends on the number of sides and the lengths of the sides.

Q: What is the relationship between the area of a kite and the area of a polygon with more than four sides?

A: There is no direct relationship between the area of a kite and the area of a polygon with more than four sides. The area of a kite is calculated using the formula A = (d1 * d2) / 2, while the area of a polygon with more than four sides is more complex and depends on the number of sides and the lengths of the sides.

In this article, we have answered some frequently asked questions about the area of a circle and the area of a kite. We have also discussed the significance of the diagonals in a kite and the relationship between the area of a circle and the area of a kite. We hope that this article has been helpful in clarifying any doubts you may have had about these concepts.