Mixed assessment · Question 5
5 written marks
A wedge of angle \(\theta\) is removed from a disk of radius \(8\) cm. The remaining region has perimeter \(16\pi+4\) cm.
Part a · 2 marks
Find \(\theta\) in radians.
Part b · 3 marks
Find the remaining area and explain how its boundary differs from that of the original disk.
Complete-answer checking, worked solutions and indicative written criteria.
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