On finding a perimeter and area and there is a decimal for the shape but the 2 other numbers on the shape don't. Do I multiply/add with the decimal on all numbers or only on that 1 number?
EXAMPLE
There is a triangle
one side is 1.5
the base is 2
and the other side is 3
What do I do?
Is the answer for area 9.000?
If that is the right answer please let me know cause my teacher says to divide the number with 2 once you get the answer
As I told you before, you need to know the height of the triangle to find its area.
http://www.mathsisfun.com/area.html
On the paper it says height= 1 b
1 b? What does the b mean?
To find the perimeter of the triangle, you need to add up all the sides. In this case, you have one side measuring 1.5, the base measuring 2, and another side measuring 3.
1.5 + 2 + 3 = 6.5
So the perimeter of the triangle is 6.5.
To find the area of the triangle, you can use the formula:
Area = (base * height) / 2
In this case, the base is 2. To find the height, you might need additional information about the triangle. If you have the height, you can proceed to calculate the area.
Now, regarding the decimal point in the answer, if your teacher requires you to round to a certain decimal place, you should follow their instructions. In this case, if your teacher asks you to round to three decimal places, the area would be 9.000.
However, it's important to note that dividing the area by 2 does not produce the correct result. Dividing by 2 is a formula used to calculate the area of a triangle when you know the base and height. It is not necessary for this specific example.