A wire bent in the shape of an equilateral triangle of side 22 cm is straightened and re-bent into a circle. Find the radius of the circle in cm. Take π = 22/7.

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Accepted Answer

10.5. Length of wire = 3 × 22 = 66 cm. Setting 2πr = 66 gives 2 × (22/7) × r = 66, so r = (66 × 7)/44 = 10.5 cm.

A wire bent in the shape of an equilateral triangle of side 22 cm is straightened and re-bent into a circle. Find the radius of the circle in cm. Take π = 22/7.

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