Question

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

Answer 1

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