how would you set this up
Two sides of a triangle measure 11.4 cm and 16.2 cm. If the perimeter is 32.1 cm, what is the length of the third side in centimeters?
32.1 - 11.4 - 16.2 = ?
I think the answer is 4.5
To solve this problem, you can use the perimeter formula for a triangle, which states that the perimeter is equal to the sum of the lengths of all three sides.
In this case, you are given two sides of the triangle, measuring 11.4 cm and 16.2 cm. To find the length of the third side, you need to subtract the sum of these two sides from the given perimeter of 32.1 cm.
Step 1: Add the lengths of the two given sides:
11.4 cm + 16.2 cm = 27.6 cm
Step 2: Subtract the sum of the two given sides from the perimeter:
32.1 cm - 27.6 cm = 4.5 cm
Therefore, the length of the third side is 4.5 cm.