Generalidades de La esfera

THE SPHERE

WHICH IS A

SPHERE ?

It is a solid that is formed by all the points in space that are at the same distance from a fixed point called the center of the sphere. This distance is called the radius of the sphere. The figure below shows a sphere of radius r

PARTS OF A SPHERE

• Center: Interior point equidistant from any point on the sphere.

• Radius: Distance from the center to a point on the sphere

• Chord: Segment that joins two points on the surface.

• Diameter: Rope that passes through the center.

• Poles: They are the points of the axis of rotation that remain on the spherical surface.

AREA AND VOLUME FORMULA

•  $Area=4\pi r^2$   
  

•  $Volume=\frac{4}{3}\pi r^2$  

Multiple Choice

The dome of the Clan of the town of Usme has a hemispherical shape, with a radius of 50m². If restoring it has a cost of $ 3,000 per m², how much will the restoration budget amount to?

• $ 47.124.000

• $ 59.485.000

• $ 6.4280.000