Question

What’s the correct answer for this?

Answer 1

The answer is option 2.

Explanation:

You have to use length or arc formula, Arc = θ/360×2×π×r where θ represents degrees and r is radius. Then substitute the following values into the formula :

`arc = (θ)/(360) * 2 * \pi * r`

Let θ = 45,

Let r = 12,

`arc = (45)/(360) * 2 * \pi * 12`

`arc = (1)/(8) * 24\pi`

`arc = 9.42 \: units \: (3s.f)`

Answer 2

9.4 units.

Because,

Formula for arc length is 2times pie times radius times angle divided by 360.