Question

find the circumference of circle whose diameter is 6.55 cm​

Answer 1

Given :

• Shape = Circle
• Diameter of Circle = 6.55cm

To Find :

• Circumference of Circle.

Solution :

✰ As we know that, Circumference of a Circle is given by 2πr , so Firstly we wil find the radius of the circle and then we will find the Circumference of the Circle. Now, for finding the radius of the Circle we know that Diameter is Double of Radius, so we will divide the given diameter with 2 to find the radius of the circle.

⠀⠀⠀⠀

⠀⠀⠀⟼⠀⠀⠀Diameter = 2 × Radius

⠀⠀⠀⟼⠀⠀⠀6.55 = 2 × Radius

⠀⠀⠀⟼⠀⠀⠀6.55 / 2 = Radius

⠀⠀⠀⟼⠀⠀⠀3.27cm = Radius

⠀⠀⠀

Now,

⟹⠀⠀Circumference of the Circle = 2πr

⟹⠀⠀Circumference = 2 × 22/7 × 3.27

⟹⠀⠀Circumference = 44 × 3.27/7

⟹⠀⠀Circumference = 143.88/7

⟹⠀⠀Circumference = 20.55cm

Thus Circumference of Circle is 20.55cm

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★ Additional Info :

Formulas Related to Circle:

• Circumference of Circle = 2πr
• Area of Circle = πr²
• Diameter of Circle = 2r
• Radius of Circle = D/2

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Answer 2

Given :

• Diameter of the circle is 6.55 cm

To Find :

• Circumference of Circle

Solution :

• We need to find the Circumference of the circle, Diameter is given. Firstly we will find the Radius of the Circle.

• Then, by using Formula of circumference We will easily Get the Circumference.

✰ Diameter = 6.55cm

✰ Radius = 6.55/2 = 3.27

Circumference = 2πr

➤ 2 × 22/7 × 3.275

➤ 44/7 × 3.27/100

➤ 14388 × 7000

➤ 20.55cm.

∴Circumference of circle is 20.55cm

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