Question

If the diameter of the wheel is 77 cm,
find its circumference​

Answer 1

Answer :-

• The circumference of the wheel is 242 cm.

Given :-

• The diameter of a wheel is 77 cm.

To find :-

• It's circumference.

Step-by-step explanation :-

• Here, the diameter of a wheel has been given to us. We have to find it's circumference.

We know that :-

$\underline{\boxed{\sf Circumference \: of \: a \: circle = \pi d}}$

Where,

• π = pi.
• d = Diameter.

Here,

• pi = 22/7.
• Diameter = 77 cm.

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Hence,

$\rm Circumference = \dfrac{22}{\cancel{7}} \times \cancel{77}$

Reducing the numbers,

$\rm Circumference = \dfrac{22}{1} \times 11$

Now let's multiply the remaining numbers since we can't reduce them anymore.

$\rm Circumference = 22 \times 11$

Multiplying the numbers,

$\overline{\boxed{\rm Circumference = 242 \: cm}}$

• Hence, the circumference of the wheel is 242 cm.

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Know more :-

Define circumference of a circle.

• The length of the whole arc of a circle or the distance around a circular region is called the circumference of a circle.

Answer 2

Answer:

diameter of a wheel = 77 cm

radius d/2

circumference of circle =2πr

2×22/7×77/2

the answer is 242