I have the question posted here ~ ht tps:// brainly .com/question/12664261
An image is attached, I really can't understand the perimeter of the triangle.
triangle #1 = a= 18 b= 3 c= 42
triangle #2 = a= 9 b= 21 c=9
I tried calculators but they don't work.
you do know that the perimeter is just the sum of all the sides, right?
you cannot add 3 numbers?
your URL just took me to a google search form brainly.com, not your image.
Sorry, there are spaces in the link, and really? I used the perimeter calculator to add all the sides together but it was saying the numbers weren't acceptable.
well, in that case, you have to ask why that might be.
Take a look at the first "triangle."
Suppose you lay down the side c, of length 42
Now stretch out the other two sides. They are not long enough to even cover the base, let alone rise above it to form a triangle.
In any triangle, each side must be less than the sum of the other two sides.
So, if the sides, in order of length are a,b,c then you must have
b-a < c < b+a
This is not true for either of the figures listed above.
To find the perimeter of a triangle, you need to add up the lengths of all three sides of the triangle. In this case, we have two triangles with different side lengths.
Let's start with triangle #1 with side lengths a = 18, b = 3, and c = 42. To find the perimeter, simply add up all three sides:
Perimeter of triangle #1 = a + b + c = 18 + 3 + 42 = 63
So, the perimeter of triangle #1 is 63.
Now, let's move on to triangle #2 with side lengths a = 9, b = 21, and c = 9. Again, we'll add up all three sides:
Perimeter of triangle #2 = a + b + c = 9 + 21 + 9 = 39
Therefore, the perimeter of triangle #2 is 39.
If the calculators you've tried didn't work, it's possible that there was an error in the input or format of the calculation. However, the process to calculate the perimeter of a triangle is straightforward: add up the lengths of all sides. Make sure you double-check your calculations and ensure that you are inputting the correct values before using a calculator.