Question

diameter =18cm , radius=​

Answer 1

In context of question asked,

We have to determine the value of radius of the circle.

As per question,

We have,

Value of diameter = 18 cm.

As we know that,

Diameter of the circle is twice as the value of radius of circle.

So, for determining the value of radius we will divide the value of diameter of circle by 2.

Hence, we will get the value of radius as,

$=\frac{18}{2} = 9\;cm$

Hence, the value of radius will be 9 cm if the value of diameter is 18 cm.

Answer 2

As per the details provided in the question.

In the above question, we have the details as follow.

The given data is  diameter is 18cm.

We have to find the radius.

Here we have to use the formula of radius that is $r=\frac{d}{2}$

Thus, the radius will be as follow,

$r=\frac{d}{2}$

The radius is half of the diameter,

$r=\frac{18}{2}\\r=9cm$

Hence the value of radius is 9cm.