Answer:
The central angle ADC = 81°
Explanation:
From the figure we can see a circle with circumference = 200 cm and arc ABC length = 45 cm
To find the central angle ADC
Circumference = 200 cm
Length of arc ABC = 45
we have
arc length = circumference * (central angle /360)
central angle = (arc length * 360)/circumference
= (45 * 360)/200
= 81 cm
Therefore the central angle ADC = 81°