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What is the formula of an area of triangle cde a in square yards

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In a 4'x 4' square, cut into 2 triangles, what would be the 3rd side of each triangle?

Hi Carolyn
This is easy peasy.
A squared plus B squared = C squared
So, 4 squared (16) + 4 squared (16)= C squared
C= square root of 32 or 5.66

Link below provides a calculator so you can do it yourself.

right triangle formula Google Search

Mar 12, 2015 | Computers & Internet

1 Answer

Formula to calculate hyportenuse

The formula to calculate the hypotenuse of a right angled triangle is a^2 + b^2 = c^2 or in words, a squared plus b squared is equal to c squared. The most common mistake is that students make the hypotenuse a squared or b squared. The hypotenuse has to be c squared. Thus, when figuring out the sides of a right-angled triangle, always make sure the hypotenuse is the longest side.

For example, a triangle with sides of length 3 and 4, calculate the hypotenuse. Let a be 3 and b be 4. 3^2 + 4^2 = c^2 or 9+16 = c^2, or 25 = c^2. Now take the square root of both sides and we get c = 5.

Feb 18, 2015 | Office Equipment & Supplies

2 Answers

Ehow com

There isn't one. Square foot is a unit of area, cubic yard is a unit of volume.

What's the volume in cubic yards of a room that's 10 feet by 12 feet? That depends on how high the ceiling is. Without the third dimension, there is no way to convert.

Jul 07, 2014 | Computers & Internet

1 Answer

What is the pyramid total surface formula

A pyramid has 5 sides including the base. If the base is a rectangle L long and W wide, its area is L*W.

The other sides are triangles. If the height of the pyramid is H, the triangles that are L wide at the base will have a height of the square root of half of W squared plus H squared, or SQRT((.5*W)^2+H^2) and the two that are W wide at the base will have a height of SQRT((.5*L)^2+H^2). The area of a triangle is .5*height*base, so the total surface two triangles with the same height and base is 2*.5*height*base = height*base.

So, the total surface area of a pyramid L long by W wide by H tall would be:
L*W (the area of the base)
+ L*SQRT((.5*W)^2+H^2) (the area of the 2 triangles with base L)
+ W*SQRT((.5*L)^2+H^2) (the area of the 2 triangles with base W)

Hope this is helpful!

May 23, 2014 | Encore Math Advantage Algebra II and...

1 Answer

Volume of triangular pyramid

Here is to get you started. To increase the size of the image do a CTRL Plus (+) in your browser.
You need to calculate the slant height of the pyramid for the formula of the lateral area. You should find a value of (1/2)*SQRT(203) or about 7.1239 cm


You need to calculate the altitude (height) of the pyramid from the apex (summit) to the center of the base triangle (center of inscribed circle, barycenter, orthocenter). The hypotenuse of such triangle is the slant height. One leg is the altitude (to be found), the measure of the second leg is (1/3) the altitude of the equilateral triangle that forms the base. You should find (1/3) m MH= (1/3)* (11/2)*SQRT(3)

1. Calculate the area of the base (use a formula for the equilateral triangle or the general formula for a triangle: you have its height MH ).
2. Lateral area = 3 times the area of triangle Triangle ECD (in yellow above).
3. Total area = area of base + lateral area.
4. Volume= (1/3)(Area of base)* (height of pyramid)
If you can see the details on the screen capture below, fine, Press CTRL + in your browser to increase the size.

Mar 29, 2014 | Office Equipment & Supplies

1 Answer

Khan academy

Since you have the coordinates of the three vertices, the most straightforward method is to calculate the length of the sides using the distance formula
where SQRT is the square root function, X_1, Y_1) are the coordinates of point P_1, etc.
With the three lengths available, use Heron's (sometimes called Hero's) to find the area.
Here is Heron's formula.
Let's call the lengths a, b, and c
Let p be the semi-perimeter p= (a+b+c)/2
Area= SQRT [ p(p-a)(p-b)(p-c) ]
Make sure that there is a matching ) parenthesis to the one in the SQRT.

You can choose the base as the side opposite the vertex (0,0)
Calculate the equation of the line that supports the base.
Calculate the equation of the line issuing from (0,0) and perpendicular t the base.
Calculate the coordinates of the intersection point , call it H, of the base and its perpendicular line (coming from (0,0)).
Calculate the distance OH, that is the height relative to the chosen base.
Use the formula Area= base*height/2

Now it is up to you to choose one of the two methods and calculate the area of that triangle. The second method involves more calculations than the first, and more possibilities of errors. Good Luck

Nov 06, 2013 | Mathsoft Computers & Internet

1 Answer

What are the different formula in solving the area, height, base of a trapezoid?

o find the area of a triangle, multiply the base by the height, and then divide by 2. The division by 2 comes from the fact that aparallelogram can be divided into 2 triangles. For example, in the diagram to the left, the area of each triangle is equal to one-half the area of the parallelogram.
Since the area of a parallelogram is area_parallelogram_form.gif, the area of a triangle must be one-half the area of a parallelogram. Thus, the formula for the area of a triangle is: area_triangle1.gif or area_triangle2.gif where b.gif is the base, h.gif is the height and ยท means multiply. tab.gif The base and height of a triangle must be perpendicular to each other. In each of the examples below, the base is a side of the triangle. However, depending on the triangle, the height may or may not be a side of the triangle. For example, in the right triangle in Example 2, the height is a side of the triangle since it is perpendicular to the base. In the triangles in Examples 1 and 3, the lateral sides are not perpendicular to the base, so a dotted line is drawn to represent the height.

May 13, 2011 | Computers & Internet

1 Answer

I don't know how to use my calculator on my dell desktop for calculating square yds. and feet

In the Windows calculator application located in the accessories folder in the start menu, you can calculate square yardage by using area formulas such as length times width for a rectangle/square. To enter this with a keyboard you would enter (the length)*(the height) as long as your units are in feet or yards you will get the answer in square feet or yards. The Windows 7/vista calculators have built in conversion factors for yards and feet that can be found by pressing view>unit conversion.

Apr 21, 2011 | Dell Computers & Internet

1 Answer

What is the area of the triangle if its sides are 8cm., 17cm.&15cm.


OK, the formula for the Area of a triangle is A=0.5xBasexHight. For this formula to be applicable you will need to have a 90 degree angle in this triangle.

For example:

Base = 8
Hight = 15

A = 0.5x8x15

Let me know if you need any further assistance.

Kind regards

Nov 20, 2010 | Health & Beauty

2 Answers

I have a lot tha is 152.95' X 119.88' X 130.00' X 50.00'. What part of an acre is this.

  1. This lot does not have the form or a regular quadrilateral (rectangle, square, parallelogram, etc.)
  2. So you cannot calculate its area, you have to know exactly the shape it has.
  3. With polygons, one usually cuts them into triangles.
  4. You have to cut it into two triangles,
  5. measure the base and the height of each triangle,
  6. use the area formula for the triangle ( area = heightX base/2)
  7. After you calculate the areas of both triangles, you add them to get the area of the the whole lot in ft^2.
  8. Using the conversion formula between acres and ft^2 which is 1 acre=43560 ft^2, you divide the area of the lot in square feet by the number 43560 ft^2 and express the result as a percentage or a fraction .
Hope it helps.
Thanks for using FixYa.

Nov 19, 2009 | Calculated Industries Pocket Real Estate...

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