Answer:
22.9 i think
Step-by-step explanation:
Answer: 22.9
Step-by-step explanation: Perimeter of a triangle is the sum of all side lengths, in this case, 4, 5, and 13.9, and the sum is 22.9. Hope this helps, and have a great day!
hi
formula for cicrle circumference is 2 *radius*Pi
as radius is 45, Pi is 3.14....
I let you do the math...
f(9)=5(9-3)(9-2)
=5*6*7
=210
