Question

Find the circumference (in cm) of a circle of radius 7 cm

Answer 1

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formula of circumference = 2 pie r

Radius = 7cm

2 pie r

$2 \times \frac{22}{7} \times 7 \\ \\ = 2 \times 22 \\ = 44$

= 44cm

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hope it helps

Answer 2

Answer:

Hence, the circumference of circle having radius 7 cm will be 44 cm

Step-by-step explanation:

In context to question asked,

We have to determine the circumference of the circle.

From the data given in the question,

We have,

Radius of circle = 7 cm

As we know that,

Circumference of circle is the sum of length of outer border of the circle.

As we know that,

We have,

formula for finding circumference of circle is $2\times \Pi r$

So, for determining the value of circumference of circle, we will put the value of radius of circle in above formula.

Thus we will get,

Circumference of circle  $2 \times \Pi r = 2 \times \frac{22}{7} \times 7 = 2 \times 22 = 44\:cm$