# 40 Geometry 5-5 Worksheet Answers

### Introduction

Geometry is a fascinating branch of mathematics that deals with the properties and relationships of shapes and figures. It is a subject that requires both logical thinking and creativity, as it involves visualizing and manipulating various geometric concepts. One common tool used in geometry education is worksheets, which provide students with practice problems to reinforce their understanding of the material. In this article, we will explore the answers to a specific worksheet, Geometry 5-5, and discuss the solutions to the problems presented.

### Problem 1: Finding the Area of a Circle

The first problem in the Geometry 5-5 worksheet asks students to find the area of a circle with a radius of 5 units. To solve this problem, we can use the formula for the area of a circle, which is A = πr^2. Substituting the given radius, we have A = π(5^2) = 25π square units. Therefore, the area of the circle is 25π square units.

### Problem 2: Finding the Area of a Trapezoid

The second problem in the worksheet involves finding the area of a trapezoid. The trapezoid has a height of 8 units and bases measuring 6 units and 10 units. To find the area of a trapezoid, we can use the formula A = 1/2(b1 + b2)h, where b1 and b2 are the lengths of the bases and h is the height. Substituting the given values, we have A = 1/2(6 + 10)(8) = 1/2(16)(8) = 64 square units. Therefore, the area of the trapezoid is 64 square units.

### Problem 3: Finding the Volume of a Cylinder

The third problem in the worksheet requires finding the volume of a cylinder. The cylinder has a height of 12 units and a radius of 3 units. To find the volume of a cylinder, we can use the formula V = πr^2h. Substituting the given values, we have V = π(3^2)(12) = 108π cubic units. Therefore, the volume of the cylinder is 108π cubic units.

### Problem 4: Finding the Surface Area of a Cone

The fourth problem in the worksheet focuses on finding the surface area of a cone. The cone has a radius of 4 units and a slant height of 9 units. To find the surface area of a cone, we can use the formula SA = πr(r + l), where r is the radius and l is the slant height. Substituting the given values, we have SA = π(4)(4 + 9) = π(4)(13) = 52π square units. Therefore, the surface area of the cone is 52π square units.

### Problem 5: Finding the Perimeter of a Regular Hexagon

The fifth and final problem in the worksheet involves finding the perimeter of a regular hexagon. A regular hexagon is a polygon with six equal sides. To find the perimeter of a regular hexagon, we can multiply the length of one side by six. If the length of one side is given as 7 units, the perimeter would be 6 * 7 = 42 units. Therefore, the perimeter of the regular hexagon is 42 units.

### Conclusion

Solving geometry problems can be both challenging and rewarding. By practicing with worksheets like Geometry 5-5, students can enhance their understanding of geometric concepts and develop problem-solving skills. In this article, we explored the answers to the problems in Geometry 5-5, covering topics such as finding the area of a circle, trapezoid, and cylinder, as well as the surface area of a cone and the perimeter of a regular hexagon. By mastering these concepts, students can lay a strong foundation for further exploration in the exciting world of geometry.