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InterviewSolution
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21. In the adjoining figure, find the area of the shaded regionenclosed between two concentric circles of radii 7 cm and14 cm, where <AOC 40°. | Use-22 |
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Answer» The Area of Major Sector of bigger circle =360 -theta / 360 × 22/7 × r × r360- 40 /360 × 22/7 × 14× 14By solving it you will get answer as,547.55 cm^2 The Area of major sector of smaller circle =360- theta / 360 × 22/7 × r × r360 - 40 /360 ×22/7×7×7By solving it you will get answer as,136.88cm^2The area of shaded region = area of bigger cicles major sector - area of smaller cicles major sectorArea of shaded region = 547.55 - 136.88= 410.67 cm ^2 I am not satisfied |
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