# geometry

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an equilateral triangle of side 20cm is inscribed in a circle.calculate the distance of a side of the triangle from th centre of the circle.

• geometry -

The circle center lies at the intersection of the angle bisectors.

Draw a line from the center perpendicular to a side.

The distance from the center to the side is d = 10(sin30ยบ) = 5.

• geometry -

5.77cm

• geometry -

11.54cm

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