find the area of the shaded region in the figure given below where id of the two concentric circles with Centre O are 7 cm and 14 cm respectively and angle AOC equals to 40 degree
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Answer:
shaded= big sector-small sector
Step-by-step explanation:
r=7 ,R=14
A.T.Q
theta/360*pi r square - theta/360*pi R sruare
40/360*22/7*7*7 - 40/360*22/7*14*14
40/360*22/7[7*7 - 14*14]
40/360*22/7[21*7]
ans= 154/3
=5.1cm sq
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