The problem asks about a common method for drawing a circle. The options are: a) Using a ruler and pencil. b) Using a protractor. c) Using a piece of string and a fixed center point.

1. Problem Description

The problem asks about a common method for drawing a circle. The options are:

a) Using a ruler and pencil.

b) Using a protractor.

c) Using a piece of string and a fixed center point.

2. Solution Steps

A circle is defined as the set of all points equidistant from a central point. The distance from the central point to any point on the circle is called the radius.

a) Using a ruler and pencil could help with drawing a straight line, but not necessarily a circle without additional aids.

b) A protractor is used to measure angles, and is not directly useful for drawing a circle.

c) Using a piece of string and a fixed center point allows us to maintain a constant radius, tracing out a circle. The fixed point acts as the center of the circle.

3. Final Answer

Using a piece of string and a fixed center point.