Question

Draw two circles having radii 2.0 cm and 4.5 cm with the same center O.

Answer 1

Hint: To solve this first we have to write the steps of construction and then draw the figures with respective dimensions. First draw the circle with radius 4.5 cm and now draw a circle from the same center with radius 4.5 cm.

Complete step-by-step answer:
Concentric circles are circles with a common center. The region between two concentric circles of different radii is called an annulus. Any two circles can be made concentric by inversion by picking the inversion center as one of the limiting points.
Step 1: Draw a circle of radius 2.0 cm
Step 2: Draw another circle with the same center of radius 4.5 cm.
Step 3: Now the figure appears as a ring. Now draw the line from the outer circle to the inner circle the length of the line is the width of the circular ring.

The circle formed here is a concentric circle.

Note: The circles formed here are both concentric. We can also find the area of the ring by Subtracting the area of outer ring to the inner ring. All the dimensions are in cm. Take care while writing the dimensions.