Question

If the radius of a circle is 49cm.Find the circumference of the circle​

Answer 1

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• Radius of circle = 49 cm

$\sf \boxed{ \bold{ \star \: to \: find \star}}$

• circumference of circle(c)

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$\boxed{ \sf \: c = 2\pi r}$

$\implies \sf \: c = 2 \times \frac{22}{7} \times 49$

$\implies \sf \: c = 2 \times \frac{22}{ \cancel7} \times \cancel{ 49}$

$\implies \: \sf \: c = 44 \times 7$

$\implies \sf \: c = 308 \: cm$

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• circumference of circle = 308 cm

Answer 2

Answer:

Circumference of circle is 307.72 cm.

Step-by-step explanation:

As per given information ,

Radius of circle is 49 cm.

We have to find out the circumference of circle.

As we know that,

Circumference of circle = $2 \times \pi \times r$

Where,

r = radius of circle.

Put the value of r = 49 cm ,

Circumference of circle = $2 \times \pi \times 49$

Circumference of circle = $98\times \pi$

Put the value of π = 3.14

Circumference of circle = $98\times 3.14$

Circumference of circle = $307.72$

Hence,

Circumference of circle is 307.72 cm.