Finding the Missing Side Length of a Composite Shape

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To find the area of a composite shape, the area of the rectangle is calculated using the formula A = l x w, resulting in 112 square meters. The height of the triangle is given as 5 meters, and the base is 8 meters. Instead of needing to find the length of the triangle's sides, the area can be directly calculated using the triangle area formula A = (base x height) / 2. This realization simplifies the process, allowing for the total area of the composite shape to be determined without additional calculations. The discussion highlights the importance of recognizing available dimensions for area calculations.
Kirito123
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Homework Statement


upload_2016-5-12_22-30-0.png


Homework Equations


A = l x w
A = hbb / 2

The Attempt at a Solution


To find the area of a rectangle you would use the formula "A = L x W". In this case A = 14 x 8 which is eual to 112, Now all i need is the area of the triangle and then i add them together and that will be the area of the whole figure.

So i know we have the height of the triangle is 5
Also the part i colored yellow is 8 m long.
upload_2016-5-12_22-37-3.png


So my question is how can i find the length of 1 of the sides of the triangle.
 
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Kirito123 said:

Homework Statement


View attachment 100649

Homework Equations


A = l x w
A = hbb / 2

The Attempt at a Solution


To find the area of a rectangle you would use the formula "A = L x W". In this case A = 14 x 8 which is eual to 112, Now all i need is the area of the triangle and then i add them together and that will be the area of the whole figure.

So i know we have the height of the triangle is 5
Also the part i colored yellow is 8 m long.
View attachment 100650

So my question is how can i find the length of 1 of the sides of the triangle.

Why would you need to find that?
 
Ray Vickson said:
Why would you need to find that?

I need to find the area of that triangle, that way i can find the whole area of that composite shape.
 
Kirito123 said:
I need to find the area of that triangle, that way i can find the whole area of that composite shape.
for area of that triangle you already have the base ( 8m) and height (5m), so you don't need to calculate other sides, you can directly calculate the area.
 
OMG I totally didn't even think about that...... face palm:doh:. sahil you just cleared my mind, man I am so in a blrr today. anyway i now know what to do.
 
Thanks m8 :)
 

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