Question

What is the circumference of circle if radias is 7

Answer 1

circumference of a circle =2πr

=2*22/7*7

=44 units

Answer 2

It is given that the radius of a circle is 7 ( units ).

From the properties of circle we know that the formula of the circumference of any circle is 2πr, where r is the radius of that circle.

So, if we substitute the value of radius in the above formula, we will get the accurate value of circumference of the circle.

As radius of this circle is 7 units,

= > Circumference = 2π( 7 units )

= > Circumference = 2 x π x 7 units

= > Circumference = 2 x 22 / 7 x 7 units          [ numeric value of π is 22 / 7 ]

= > Circumference = 2 x 22 units

= > Circumference = 44 units

Hence the required circumference of this circle is 44 units.