Areas related to Circles ncert solutions Chapter 12 Exercise 12.3 Question 14
14. AB and CD are respectively arcs of two concentric circles of radii 21 cm and 7 cm with center O. If
, find the area of the shaded region.
Area of shaded region = Area of sector OAB- Area of sector OCD (1)
Area of sector OAB
(2)
Area of sector OCD
(3)
Putting (2) and (3) in (1), we get
Area of shaded region
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