Question

Which of the following is/are three-dimensional shapes?
A) Sphere
B) Cylinder
C) Cone
D) All of the above

Answer 1

Hint: Three-dimensional shapes are solid shapes or objects which have three dimensions namely, length, width, and height. The 3D shapes also have depth, so the object looks solid. A 3D shape has faces, edges, and vertices. So, any shape consisting of these properties will be a three-dimensional shape.

Complete step by step answer:
Let us look at the options one by one,
A) Sphere: A sphere is a shape that resembles a ball. It is perfectly round, with an equal distance between each point on the surface and the center. The radius of a sphere can be used to calculate its size as it has only one face. Since it is a round object with depth, we can call it a three-dimensional shape.

B) Cylinder: It is a solid object with a circular base. It has two identical ends of a circle. A cylinder has three faces and two edges. It can be calculated by using the radius of the circle and the height of the cylinder, indicating that it has depth. With these properties, we can say that a cylinder is also a three-dimensional shape.

C) Cone: A cone is a cone-shaped object that resembles an ice cream cone. It has a vertex and a round circular base. Radius, height, and slant height can all be used to calculate it. As a result, it possesses depth and exhibits all of the characteristics of a three-dimensional shape. Hence, the cone is a three-dimensional shape.

D) All of the above: Now by considering all the points above, we can say that these shapes are three-dimensional. And thus, the correct answer is all of the above
Hence, we can say that option (D) is correct.

Note:
The only thing we need to consider is the depth and the objectivity of the shape. Any shape that is used in real life is a three-dimensional shape. You can also make diagrams of the given shapes to obtain a better understanding of them. Remember that 2D shapes lie on the x-axis and y-axis but 3D shapes also lie on the z-axis.