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In a circle of diameter 56 cm, an arc subtends an angle of 60° at the centre, then what will be the length of arc. (=22/7) |
Answer» ANSWER:GIVEN:Diameter of the CIRCLE = 56 cm Radius of the circle = 56/2 = 28 cm An arc subtends an and of 60° at the centre. To Find:The length of the arc. Formula:Length of the arc = THETA / 360° × 2πr Solution:According to the question, Theta = 60° π = 22/7 r, radius = 28 cm Length of the arc = 60°/360° × 2 × 22/7 × 28 Length of the arc = 1/6 × 44/7 × 28 Length of the arc = 1/3 × 22 × 4 Length of the arc = 88/3 Length of the arc = 29.3 cm (approx.) |
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