The measure of convex arc upper ZWX is 139πr/180.
Let us say the radius of the given circle is r.
The central angle of the lower arc ZWX = 41+180 = 221 degree
The central angle of the upper arc ZWX = 360- central angle of the lower arc ZWX.
The central angle of the upper arc ZWX = 360-221 = 139 degree
What is the formula for arc length?
Arc length is the product of radius and central angle.
Arc length of upper ZWX:
The central angle of the upper arc ZWX (in radians)* radius of the circle.
Arc length of upper ZWX = 139π/180*r
Arc length of upper ZWX = 139πr/180
Therefore, the measure of convex arc upper ZWX is 139πr/180.
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