COMO HACER UN CONO DE PAPEL FIGURA GEOMETRICA

Summary

In this video tutorial, viewers are guided step-by-step on how to create a paper cone. The process includes gathering basic materials like paper, a ruler, compass, scissors, and glue. The video demonstrates how to draw a circle for the base, calculate the necessary angle for the cone, and cut out the shape. Viewers are also shown how to fold, glue, and assemble the cone carefully to ensure a neat finish. The tutorial is easy to follow, with helpful tips on measurements and creating a smooth, well-constructed geometric shape.

Takeaways

• 😀 To create a paper cone, you will need A4 paper, a ruler, a square, a protractor, a pencil, scissors, glue stick, and a compass.
• 😀 The first step is to use the compass to draw a circle, which will form the base of the cone. The radius of the circle is chosen based on your preference, in this case, 3 cm.
• 😀 Mark the center of the circle where the compass was placed, then draw a line to represent the cone's height (e.g., 10 cm).
• 😀 Use the compass again to measure the height and trace a curved line to form part of the cone's surface.
• 😀 To determine how much of the curved line to use, calculate the angle by applying a formula: (r / a) * 360, where 'r' is the radius and 'a' is the height. This results in a 108° angle.
• 😀 Use a protractor to measure and mark the 108° angle on the cone's diagram.
• 😀 Draw a line from the end of the height to the curved line to complete the cone's shape. This forms the slanted side of the cone.
• 😀 Add flaps (tabs) around the edges of the cone for gluing purposes. These tabs can be drawn freehand or with a ruler.
• 😀 Cut out the cone shape carefully, including the tabs and slanted edges.
• 😀 Fold the tabs and the base of the cone inwards to prepare for gluing, ensuring that the tabs align properly.
• 😀 Apply glue to the edges and tabs, then press the cone together, allowing it to dry to complete the paper cone.

Q & A

What materials are needed to create the paper cone?

You will need A4 paper, a ruler, a square, a protractor, a pencil, scissors, a glue stick, and a compass.

How do you begin the process of creating the paper cone?

The first step is to use the compass to draw a circle with a radius of 3 cm on the paper, which will serve as the base of the cone.

What is the significance of the radius measurement in the paper cone construction?

The radius determines the size of the cone's base. In this case, the radius is 3 cm, which creates a 6 cm diameter base.

What role does the protractor play in making the paper cone?

The protractor is used to measure and draw the 108-degree angle needed to form the cone's side, which is calculated from the radius and height.

How do you calculate the angle for the cone's side?

The angle is calculated by dividing the radius (3 cm) by the height (10 cm), which gives 0.3, and then multiplying that by 360 degrees, resulting in 108 degrees.

What is the purpose of the tabs drawn on the cone's edge?

The tabs are used to glue the cone together. These tabs help to secure the sides of the cone and maintain its shape when folded.

Why is it important to fold the tabs inward?

Folding the tabs inward ensures that the glue is applied neatly and that the construction is smooth, hiding any markings inside the cone.

How do you cut the cone shape from the paper?

After drawing the cone's development, carefully cut along the marked lines with scissors, including the tabs, to shape the cone.

What should you do after cutting out the cone's shape?

After cutting the shape, fold the tabs and the base inward, apply glue to the edges, and press them together to form the cone.

What is the final step to complete the paper cone?

Once the cone is glued together, wait for it to dry, and the paper cone is ready to be used.