Question

Find the arc length of the partial circle.

Answer 1

Known :

r = 5 cm

θ = 360° - 90° = 270°

Asked :

Arc length of the partial circle = ...?

Answer :

Arc length

`= (θ)/(360) * 2\pi r \\ = (270)/(360) * 2 * 3.14 * 5 \\ = (3)/(4) * 31.4 \\ = (3)/(4) * (314)/(10) \\ = (942)/(40) \\ = 23.55 \: cm`

So, the arc length of the partial circle is 23,55 cm

Hope it helps and is useful :)