Question

if the radius of a circle is 4cm,what will be the length of its diameter?​

Answer 1

The diameter will be of length 8 cm.

It is given that,

The radius of the circle = 4 cm

To find : The length of the diameter of the circle.

It is important know that, the diameter is double the length of the radius. So, we have to apply the formula of the relation between diameter and the radius.

Let, the diameter be 'd'.

The relation or the formula is :

Diameter = 2 x Radius

d = 2 x 4

d = 8 cm

Therefore, the diameter's length is 8 cm

Answer 2

The length of its diameter is 25.13 cm.

Step-by-step explanation:

Given:

If the radius of a circle is 4cm

To find:

The length of its diameter?

Solution:

Radius of the circle = 4 cm

Therefore diameter of the circle = radius $\times$ 2 = 4 $\times$ 2 = 8 cm

Length  of the diameter = circumference = 2 π $\times$ r = 2 π $\times$ 4 = 25.13 cm

Result:

The length of its diameter is 25.13 cm.

To know more:

Find the length of the longest chord of a circle with radius 4 cm​

https://brainly.in/question/12122483