Question

The radius of a circle measures 16 mm what is the circumference of the circle?

Answer 1

Answer:

100.48mm

_____________

The formula for calculating the circumference of a circle is 2πr or 2 * pi * radius.

You are given that the radius is 16mm. You are also told to use 3.14 as a way to solve the problem. If you were going to use π, it cannot be displayed as a number without rounding. Looking at it's value, 3.1415.... We can reasonably assume that they want us to use 3.14 instead of pi. Now let's calculate it:

$2 \times 3.14 \times 16mm = 100.48mm$

Answer 2

The formula for the circumference of a circle is 3,14 (pi) x diameter. We know that the radius is half of the diameter so therefore you do 16x2= 32 —> 3,14x32= 100,48mm. Answer: 100.48mm