Answer:Perimeter is the measurement all around the shape. So, to do this we wolud need to add this measurments together
Step-by-step explanation:
8.2+3.9=12.1
12.1+4.5=16.6
Answer:16.6cm
Answer:
The answer is the fourth one.

Step-by-step explanation:
Formula for area of a triangle is 1/2 x base x height.
musing the information given you have:
360 = 1/2 x base x 18
First multiply both sides by 2:
720 = base x 18
Now divide both sides by 18:
Base = 720/18
Base = 40 cm