Question

Q.2. Deline:
circunference
(b) Concentric circle​

Answer 1

Step-by-step explanation:

the circumference and area of circle. Circumference of circle: The distance around the circular region is called its circumference. ... In case of concentric circles: The region enclosed between two concentric circles of different radii is called the area of the ring.

Answer 2

Answer:

Circumference

The circumference is defined as the distance around something round or rounded, especially the distance around the edge of a circle.An example of circumference is the distance around the outer boundary of a circle.

Concentric circle

Concentric circle is defined as two or more circles that have the same center point. The region between two concentric circles are of different radii is known as an annulus.