**The Giant Circle Challenge Answer Key with Work**

Introduction:

The Giant Circle Challenge is a popular math problem that has been circulating on social media and puzzling many individuals. This challenge involves finding the area and circumference of a giant circle, given only the radius. In this article, we will provide the answer key to the Giant Circle Challenge, along with a step-by-step explanation of the work involved.

**Answer Key:**

The answer to the Giant Circle Challenge is as follows:

– Area: A = πr²

– Circumference: C = 2πr

Now, let’s break down the steps involved in solving this challenge.

**Step 1: Understanding the Problem**

Before diving into the calculations, it is crucial to understand the problem at hand. The challenge provides us with the radius of a circle and asks us to find its area and circumference. The radius is the distance from the center of the circle to any point on its circumference.

**Step 2: Recall the Formulas**

To solve this problem, we need to recall two essential formulas related to circles: the formula for calculating the area and the formula for calculating the circumference. The area of a circle is given by A = πr², where π is a mathematical constant approximately equal to 3.14159. The circumference of a circle is given by C = 2πr.

**Step 3: Calculating the Area**

To find the area of the circle, we can substitute the given radius into the formula A = πr². Let’s assume that the radius provided in the challenge is 5 units. Plugging this value into the formula, we get:

A = π(5)²

A = π(25)

A ≈ 78.54 square units

Therefore, the area of the circle with a radius of 5 units is approximately 78.54 square units.

**Step 4: Calculating the Circumference**

To find the circumference of the circle, we can substitute the given radius into the formula C = 2πr. Using the same radius of 5 units, we have:

C = 2π(5)

C = 10π

C ≈ 31.42 units

Hence, the circumference of the circle with a radius of 5 units is approximately 31.42 units.

**Conclusion:**

In conclusion, the Giant Circle Challenge involves finding the area and circumference of a circle given only the radius. By applying the formulas A = πr² and C = 2πr, we can easily calculate these values. In our example, with a radius of 5 units, the area is approximately 78.54 square units, and the circumference is approximately 31.42 units. This challenge not only tests our understanding of circle properties but also reinforces the importance of mathematical formulas in solving real-world problems.