Answer :

The solution is:

Length of the darkened part of the arc = 4π

Solution:

Radius of the circle = 8

Circumference of the circle = 2πr

= 2 × π × 8

Circumference of the circle = 16π

Equal number of parts = 4

Total degree of circle = 360°

Degree of the darkened part = 360°/4 = 90°

Arc length = 16π * 90°/360°

= 16π * 1/4

= 4π

Circumference = 16π

Length of the darkened part of the arc = 4π

Hence, The solution is:

Length of the darkened part of the arc = 4π

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