# The Giant Circle Challenge Practice Problems Answer Key

## Introduction

The Giant Circle Challenge is a popular math problem that has been making rounds on the internet for years. This challenge involves drawing a circle of a specific diameter, and then drawing smaller circles within it. The goal is to draw as many circles as possible while ensuring that none of them overlap. In this blog post, we will go over some of the practice problems for this challenge and provide the answer key.

## Problem 1

Draw a circle with a diameter of 10 cm. Draw as many circles as possible within this larger circle, ensuring that none of them overlap.

The answer to this problem is 16. You can achieve this by drawing one large circle in the center and 15 smaller circles surrounding it. Make sure that the smaller circles are evenly spaced around the larger circle to avoid any overlap.

## Problem 2

Draw a circle with a diameter of 15 cm. Draw as many circles as possible within this larger circle, ensuring that none of them overlap.

The answer to this problem is 28. You can achieve this by drawing one large circle in the center and 27 smaller circles surrounding it. Again, make sure that the smaller circles are evenly spaced around the larger circle to avoid any overlap.

## Problem 3

Draw a circle with a diameter of 20 cm. Draw as many circles as possible within this larger circle, ensuring that none of them overlap.

The answer to this problem is 48. You can achieve this by drawing one large circle in the center and 47 smaller circles surrounding it. As with the previous problems, make sure that the smaller circles are evenly spaced around the larger circle to avoid any overlap.

## Problem 4

Draw a circle with a diameter of 25 cm. Draw as many circles as possible within this larger circle, ensuring that none of them overlap.

The answer to this problem is 76. You can achieve this by drawing one large circle in the center and 75 smaller circles surrounding it.

## Conclusion

The Giant Circle Challenge is an excellent way to improve your spatial reasoning skills and your ability to visualize complex shapes. By practicing with these problems and using the answer key provided, you can improve your performance and impress your friends with your newfound skills. Give it a try and see how many circles you can fit inside a larger circle!