Consruct an equilateral triangle ABC of side 5 cm. Draw a circle circumscribing the $△$ ABC. Find the length of the circumradius.

2.2 cm

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3.8 cm

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2.6 cm

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4.9 cm

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Solution

The correct option is A
2.2 cm

Construct a $△$ ABCof side 5 cm.

Draw the perpendicular bisectors of any two sides of the triangle.

Let the perpendicular bisectors meet at point O.

Taking O as the centre and radius equal to OA (or OB or OC) draw the circle.

Measure OA, circumradius = 2.2 cm

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Consruct an equilateral triangle ABC of side 5 cm. Draw a circle circumscribing the $△$ ABC. Find the length of the circumradius.

Draw an equilateral triangle of side 5 cm and its circumscribed circle. Find the length of the radius.

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