Question

If the radius of a circle is 3.9cm, then the length of the longest chord is -------------- *​

Answer 1

Answer:

hi, it's 3.9*2

Step-by-step explanation:

longest chord- diameter

diameter- 2*radius

so the answer is 7.8

Answer 2

If the radius of a circle is 3.9 cm, then the length of the longest chord is 7.8 cm

Given :

The radius of a circle is 3.9 cm

To find :

The length of the longest chord

Solution :

Step 1 of 2 :

Find diameter of the circle

Here it is given that radius of a circle is 3.9 cm

The diameter of the circle

= 2 × Radius of the circle

= 2 × 3.9 cm

= 7.8 cm

Step 2 of 2 :

Find length of the longest chord

We know that for a circle length of the longest chord is the diameter of the circle

The length of the longest chord

= Diameter of the circle

= 7.8 cm

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