0.05 X 10 = .5 because 5 x 10 is 50, and you add the decimal place.
I hope this helps you!
Answer:
First answer.
Step-by-step explanation:
This is called the Arc length, here is the formula:
Arc length = (angle/360)*(2Pi*radius)
So,
(45/360)*(2*3.14*4)
= 3.14
SO Pi !!!!!