Question

take Pi 3.14 and find the circumference of the circle whose diameter is 15 CM​

Answer 1

Answer:

47.1 cm

Step-by-step explanation:

Formula of circumference= 2πr

Radius= Diameter÷2

Here diameter= 15 cm

So radius= 15÷2= 7.5 cm

So it would be,

2 × 3.14 × 7.5

= 6.28 × 7.5

= 47.1 cm

Answer 2

Given,

The diameter of a circle is 15 cm. Take pi = 3.14.

To Find,

The circumference =?

Solution,

We can solve the question as follows:

It is given that the diameter of a circle is 15 cm. We have to find its circumference.

$Diameter\: of\: a\: circle = 15\: cm$

The formula for the circumference of a circle is given as:

$Circumference = 2\pi r$

Where $r = Radius\: of\: the\: circle$

Now, we will find the radius of the circle. The radius of a circle is equal to half its diameter.

$Radius = \frac{Diameter}{2}$

Therefore,

$Radius = \frac{15}{2} = 7.5\: cm$

Substituting r = 7.5 cm and pi = 3.14 in the above formula,

$Circumference = 2*3.14*7.5$

                          $= 47.1\: cm$

Hence, the circumference of the circle is 47.1 cm.