Answer:
1.57 cm
Explanation:
the circle has a radius of 2.
Then
The circumference of the circle = 2πr = 2π(2) = 4π
…………………………………
Since , 45/360 = 1/8
Then, the arc is 1/8 of the entire circle.
…………………
Therefore,
the length of a 45° arc = 4π/8 = π/2 cm ≈ 1.57 cm