Question

The diameter of the whole circle is 8. Find the arc length of half the circle

Answer 1

Okay!, Let's do some math.

Since the diameter is 8 the radius is 4

Formula :

(angle of arc)/360) x 2 x π x r

Angle of arc = 360

π = Approx 3.14

r = 4

Lets replace the variables!

(360/360) x 2 x (approx 3.14) x 4

Arc length = 25.12