The lateral area that a square pyramid is characterized as the area covered by that slant of lateral faces. A pyramid is a three-dimensional object who base have the right to be any type of polygon vice versa, its side faces are every congruent triangles. One next of each of these triangles coincides with one side of the base polygon. The pyramids are named according come the shape of your bases. A square pyramid is a pyramid whose base is a square. Similar to other three-dimensional shapes, a square pyramid also has two varieties of areas.

You are watching: Lateral area of a square pyramid

Lateral surface Area (LSA)Total surface Area (TSA)

Let us learn about the lateral area that a square pyramid along with the formula and a couple of solved examples here. Friend can find a couple of practice questions additionally to practice at the end.

1.What Is the Lateral Area that a Square Pyramid?
2.Formula of Lateral Area of a Square Pyramid
3.How to calculate Latera Area the Square Pyramid?
4.FAQs on Lateral Area of a Square Pyramid

What Is the Lateral Area of a Square Pyramid?


The native "lateral" way "belonging come the side". So the lateral area that a square pyramid is the amount of the locations of its side faces. This is also known together the lateral surface area (LSA) the the square pyramid. We know that a square pyramid has:

a basic which is a square.4 next faces, every of i beg your pardon is a triangle.

All these triangles room congruent and isosceles every of which has a next that corresponds with a next of the basic (square).

So, the lateral surface ar area that a square pyramid is the sum of the areas of four of the triangular side faces.


Formula of Lateral Area the a Square Pyramid


Let us consider a square pyramid who base"s size (square"s side length) is "a" and the height of each side challenge (triangle) is "l" (this is likewise known as the slant height). I.e., the base and height the each of the 4 triangular deals with are "a" and also "l" respectively. For this reason the area the each such triangular face is 1/2 × a × l. Therefore the amount of locations of all 4 triangular encounters is, 4 ( ½ al) = 2 al. Thus, the lateral area of a square pyramid = 2al

What if us are offered the height of the pyramid instead of offering the slant height? Let us assume that the height of the pyramid (altitude) be "h". Then by using Pythagoras to organize (you have the right to refer to the listed below figure),

l=√<(a2/4) + h2>

Substituting this in the over formula,

The lateral area of a square pyramid = 2al = 2a√<(a2/4) + h2>

*

Note: √<(a2/4) + h2> can be streamlined as (1/2)√(a2 + 4h2). Thus, the formula that lateral area the a square pyramid deserve to be created as 2a<(1/2)√(a2 + 4h2)> = a√(a2 + 4h2).


How to calculate the Lateral Area of a Square Pyramid?


The surface area that a lateral pyramid have the right to be calculated adhering to the offered steps,

Note the provided dimensions of the square pyramid and also check lock should have actually the exact same units.Apply the formula to calculate the lateral area that square pyramid, Lateral area that a square pyramid = 2al = 2a√<(a2/4) + h2>, where, "a" is basic length, "h" is height and "l" is slant height of the sqaure pyramid.Express the answer through square units.

Now that us have taken the lateral area the a square pyramid, permit us have a look at a few solved instances to understand better.


Solved examples on Lateral Area the a Square Pyramid


Example 1: Find the lateral area of a square pyramid that base length 10 cm and also slant elevation 16 cm.

Solution:

The base size of the square pyramid is, a = 10 cm.

Its slant elevation is, together = 16 cm.

The lateral area = 2al = 2 (10) (16) = 320 cm2

Answer: The lateral area the the provided square pyramid = 320 cm2.


Example 2: The basic area that a square pyramid is 256 square units and also its height (altitude) is 25 units. Uncover its lateral area. Ring off her answer come the nearest hundredth.

Solution:

Let the side of the basic (square) it is in "a" units.

Then that is provided that a2 = 256 ⇒ a = 16 units.

The height of the offered square pyramid is, h = 25 units.

Using lateral area the a square pyramid formula,

Lateral area = 2a√<(a2/4) + h2>

= 2 (16) √(162/4) + 252> ≈ 839.96 square units.

The final answer is rounded come the nearest hundredth.

Answer: The lateral area of the offered square pyramid = 839.96 square units.


Show solution >

go to slidego come slide



Breakdown tough concepts through an easy visuals.
Math will certainly no longer be a tough subject, especially when you understand the concepts through visualizations.

Book a complimentary Trial Class


Practice questions on Lateral Area that a Square Pyramid


Check Anwser >

go to slidego to slide


FAQs on Lateral Area the a Square Pyramid


What Is the Lateral Area of the Square Pyramid?

The lateral area of a square pyramid is the amount of the areas of every its 4 triangular side faces. If a, h, and l space the basic length, the elevation of the pyramid, and slant height respectively, then the lateral area the the square pyramid = 2al (or) 2a√<(a2/4) + h2>.

How do You discover the Lateral surface Area that a Square Pyramid?

To uncover the lateral area the a square pyramid, find the area of one side confront (triangle) and multiply that by 4. If a and also l are the base length and the slant height of a square pyramid, then lateral area of the square pyramid = 4 (½ × a × l) = 2al. If h is the height of the pyramid, then the lateral area = 2a√<(a2/4) + h2>.

What Is the Area of among the Triangular deals with of a Square Pyramid?

If a and also l are the basic length and also the slant elevation of a square pyramid, then the area of among the 4 triangular side faces is, ½ × a × l.

How carry out You uncover the Lateral surface Area and also Total surface ar Area the a Square Pyramid?

The lateral surface ar area the a square pyramid is the sum of the areas of the side deals with only, whereas the surface ar area is the lateral area + area that the base. The lateral area the a square pyramid = 2al (or) 2a√<(a2/4) + h2>.

See more: Does Cream Of Tartar Go Bad ? What Is Cream Of Tartar Really

To gain the surface ar area, we need to include the area of the basic (which is a2) to each of this formulas. The surface area the a square pyramid = a2 + 2al (or) a2 + 2a√<(a2/4) + h2>.where,

a = size of the basic (square)l = slant heighth = height of the pyramid

How to discover the Lateral Area of a Square Pyramid v Slant Height?

Lateral area that square pyramid utilizing the slant height have the right to be calculation as, Lateral area of a square pyramid = 2al, where, "a" is base length and also "l" is slant elevation of the sqaure pyramid.