Question

4. What is the diameter of a circle with sodius 10 cm

Answer 1

As per the data given in the question,

We have to determine the value of diameter of the circle, if the value of radius is given.

In question, by mistake it is written as sodius is 10 c.m., (but it should be radius is 10 c.m.) (As no such words like sodius is in mathematics).

So, as per question,

Value of radius = 10 cm.

As we know that,

Radius is a horizontal line between centre of circle to the outer boundary of the circle.

While diameter is the straight line between two outermost boundary of circle. joining from centre of circle.

So, technically,

The value of diameter is double as compared to the value of radius.

So, we can say that,

$Diameter = 2 \times Radius$

Now putting the value of radius in above,

We will get, $Diameter = 2 \times 10\: cm = 20\:cm$.

Hence, value of diameter will be 20 cm.

Correct Question:

What is the diameter of a circle with radius 10 cm

Answer 2

As per the data given in the question,

In the above question, it is given that,

The Radius of a circle is =10cm

We have to find the diameter of a circle.

Here the diameter of the circle is twice the radius of a circle.

So,Diameter=2 x radius

$D=2\times r\\D=2\times 10\\D=20cm$

Hence the radius of the circle is 20cm.

What is the diameter of a circle with radius 10 cm.