A square pyramid characterized by a square base is a three-dimensional shape having five deals with, for this reason called a pentahedron. The a lot of well known example of such a square pyramid is the Great Pyramid of Giza. A pyramid is a polyhedron that has actually a base and 3 or higher triangular deals with that accomplish at a point above the base (the apex). Interestingly, pyramids are called after their base, such as

Rectangular pyramidTriangular pyramidSquare pyramidPentagonal pyramidHexagonal pyramid
1.

You are watching: How many faces does a square pyramid have

What is a Square Pyramid?
2.Properties of a Square Pyramid
3.Types of Square Pyramids
4.Square Pyramid Formula
5.Net of a Square Pyramid
6.FAQs on Square Pyramid

What is a Square Pyramid?


A square pyramid is a three-dimensional geometric shape that has a square base and 4 triangular bases that are joined at a vertex. It is a polyhedron (pentahedron) with five faces. A square pyramid is composed of a square base and 4 triangles linked to a vertex. Its base is a square and also the side faces are triangles through a common vertex.

A square pyramid has 3 components.

The optimal suggest of the pyramid is dubbed the apex.The bottom square is dubbed the base.The triangular sides are dubbed faces.

*


Properties of a Square Pyramid


Let us list out the properties we have actually explored in the above photo. All these properties are derived from the meaning of a pyramid.

It has actually 5 encounters.It has actually 4 side encounters that are triangles.It has 5 vertices.It has 8 edges.

Types of Square Pyramids


We can distinguish the square pyramids on the basis of the lengths of their edges, place of the apex, and also so on. Let us comment on the different forms of square pyramids.

Right square pyramid

If the apex of the square pyramid is appropriate above the center of the base, it forms a perpendicular with the base. Such a square pyramid is dubbed the appropriate square pyramid.

Oblique square pyramid

If the apex of the square pyramid is not aligned best over the center of the base, the pyramid is referred to as an oblique square pyramid.

Equilateral square pyramid

If all the triangular deals with of a square pyramid have equal edges, then the square pyramid is referred to as an equilateral square pyramid.


Square Pyramid Formula


Tright here are formulas for square pyramids for finding the volume, height, base area, and also surconfront area. Here you deserve to see the formulas of the volume, total surface location (TSA), and also lateral surchallenge location (LSA) of square pyramid.

*

Base Area of a Square Pyramid

Due to the fact that the square pyramid has a square base, we deserve to calculate its base area making use of the exact same formula as the location of square, which is side × side or base edge2.

Example: Assume that the base edge of a square pyramid is given as 7 systems. Then, the base location of the square pyramid is: BA = 7 × 7 = 49 square units

Volume of a Square Pyramid

The formula to determine the volume of a square pyramid is: V = <(1/3)a2h>. Here, a is the size of the base and h is the perpendicular height.

Example: Assume that the height (h) and also the length of the base edge (a) are 9 units and 5 systems, respectively. Then, the volume of the square pyramid is:

Volume = 1/3 x 52 x 9 = 1/3 x 25 x 9 = 75 cubic units

Surchallenge Area of a Square Pyramid

Tbelow are 2 forms of surchallenge areas, one is TSA (Total Surface Area), and also the other is LSA (Lateral Surconfront Area). When we talk about its surconfront location, we primarily refer to its complete surchallenge area (which is the amount of locations of all faces), whereas the lateral surconfront location is the amount of the locations of the side encounters only. Consider a square pyramid of base edge 'a', height 'h', and also slant 'l'.

The formula to calculate the surconfront area of a square pyramid as soon as its elevation h and also base edge a are given: Surface Area = a2 + 2a√<(a2/4) + h2>The formula to calculate the surchallenge location of a square pyramid as soon as its slant elevation l and base edge a are given: Surface Area = a2 + 2alThe formula to calculate the curved surface location or lateral surface area of a square pyramid is offered as: 2a√<(a2/4)+ h2> or 2al

Example: Assume that the height h and also the length of the base edge a are 9 devices and also 5 systems, respectively.

Then, the surconfront area of the square pyramid is:

Surchallenge location = (5)2 + 2 x 5 √<(52/4) + 92>

= 25 + 10 √<(25/4) + 81>

= 25 + 10√(349/4)

= 25 +10 x 9.34

= 25 + 93.4

= 118.4 square devices.


The net of a square pyramid offers a flattened check out of each confront and also the square base in addition to its dimensions. When placed horizontally, the net of the pyramid through a square base is viewed in a 2D shape and when folded the solid shape becomes a 3D shape of a square pyramid. The net of a square pyramid has the very same variety of faces once it is flattened. The net of any type of solid form helps in finding the surconfront location of that solid form. The picture below showcases the flattened check out of a square pyramid with its deals with and also base.

*

Related Articles

Check out these interesting articles on the square pyramids. Click to understand more!


Example 1: Identify the square pyramid.

*

Solution:

Pyramids are called as per their bases. Thus, the names of the forms are as follows.

The base of the initially pyramid is a triangle. Thus, it is a triangular pyramid.The base of the second pyramid is a square. Thus, it is a square pyramid.The base of the 3rd pyramid is a pentagon. Therefore, it is a pentagonal pyramid.The base of the fourth pyramid is a hexagon. Hence, it is a hexagonal pyramid.

Because of this, the second one is a square pyramid.


Example 2: Daniel is constructing a closed square pyramid-shaped aquarium in his backyard. The base edge of the square pyramid is 10 inches and the slant height is 15 inches. Aid Daniel recognize the complete surface area of the aquarium.

Solution:

Given, the slant elevation l of the square pyramid is 15 inches, the base edge a of the square pyramid is 10 inches.

Hence, The complete surface location of the aquarium is offered by: a2 + 2al

= 102 + 2 × 10 × 15

= 100 + 300 = 400 in2

As such, the Surconfront Area of the aquarium = 400 square inches.

See more: Fluorescent Lights Tend To Emit Less Of What Color, Sensation And Perception


Example 3: Sophia has actually a vessel in the create of an inverted continuous square pyramid that hregarding be filled with water. The altitude of the vessel is 10 inches and the base edge is 7 inches. What is the volume of water Sophia can fill in the vessel?

Solution:

Given, the elevation h of the vessel is 10 inches and also the base edge of the vessel is 7 inches.