Question

Example 5. Find the area of the shaded region of the
two concentric circles with centre o are 7 cm and 14 cm
respectively and Z AOC = 40°. (N.C.E.R.T. Book)

sol :
area of sector OAC - area of sector OBD
40/360×22/7×14×14 - 40/360×22/7 ×7×7.
68.4 - 17. 1
area = 51.3
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Answer 1

Answer:

very easy to answer this question man

Step-by-step explanation:

area of sector oac-area of sector obd