Question

Draw three concentric circles of radii 1.5 centimeter, 2.5 centimeter and 3.5 centimeter with O as centre.

Answer 1

Hint: Before solving this question, one must know the meaning of radii and concentric circles.
RADII: A straight line extending from the center of a circle to the circumference. The radius of a circle is half the diameter. The plural is radius is radii, i.e. when there is more than a radius, then they are called radii.
CONCENTRIC CIRCLES: Two or more objects are said to be concentric when they share the same center. In other words, two or more circles which have the same center point are called concentric circles. The region between two concentric circles is called an annulus.

Complete step-by-step answer:
To draw: Three Concentric Circles with radii 1.5 centimeter, 2.5 centimeter and 3.5 centimeter.
Step 1. Firstly, we will draw a circle with radius 1.5 centimeter and centre O.

Step 2. Now, draw a circle with radius 2.5 centimeter around the first circle with the same centre point O.

Step 3. Lastly, draw another circle with radius 3.5 centimeter around the two circles with the very same centre point O.

So, this is how we can draw concentric circles.

Note: To measure the radius, one must use a scale to make the circle accurately because, if a scale is not used, then a mistake in the measurement can make the whole figure incorrect. Make sure that you use compasses to draw these concentric circles because not using compasses can make the figure incorrect.