Question

the radius of a circle is 4.2 cm what is the length of the longest chord of the circle​

Answer 1

Answer:

The length of the longest chord of the circle​ will be 8.4 cm.

Step-by-step explanation:

Given: The radius of a circle is 4.2 cm.

We have to find the length of the longest chord of the circle​.

• As we know, the Longest chord of any circle is its diameter.
• Therefore, the diameter of a circle is twice its radius.

We are solving in the following way:

We have,

The radius of a circle is 4.2 cm.

So, the length of the longest chord of the circle​ will be:

$=>2\times r\\=>2\times4.2\\=>8.4$

Hence, the length of the longest chord of the circle​ will be 8.4 cm.

Answer 2

Answer:

Length of the longest chord of the circle​ is $8.4$ cm .

Step-by-step explanation:

To find :  length of the longest chord of the circle​ .

Given : radius of a circle is 4.2 cm .

Solution :

• As per given data , we know that , radius of a circle is 4.2 cm . We have to find  length of the longest chord of the circle​ .
• Longest chord of the circle​ is diameter .
• We know that diameter of circle is twice of radius .

        i.e. Diameter = $2$ radius .

• Now , diameter = $2\times 4.2$

                                  $= 8.4 \ cm$