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| 1. |
Perimeter of sector is 31cm and radius is 6.5 .Find ar.of sector.\xa0 |
| Answer» Radius = 6.5 cmPerimeter of circle = 31 cm2r + l = 312 × 6.5 + l = 3113 + l = 31l = 31 - 13l = 18 cmAreas of sector =\xa0\\(\\)\\(1/2\\) × l × r = 1/2 × 18 × 6.5 = 9 × 6.5 = 58.5 sq. cm | |