Question

Find the circumference of the circle 8.5cm

Answer 1

The circumference of circle is 53.38 cm.

Explanation:

Given :

• ✧ Radius of circle = 8.5

To Find :

• ✧ Circumference of circle

Using Formula :

`\star{\small{\underline{\boxed{\sf{\red{Circumference_((Circle)) = 2\pi r}}}}}}`

• ✧ π = 3.14
• ✧ r = radius

Solution :

Substituting all the given values in the formula to find circumference of circle :

`{\dashrightarrow{\small{\pmb{\sf{Circumference_((Circle)) = 2\pi r}}}}}`

`{\dashrightarrow{\small{\sf{Circumference_((Circle)) = 2 * 3.14 * 8.5}}}}`

`{\dashrightarrow{\small{\sf{Circumference_((Circle)) = 2 * (314)/(100) * (85)/(10)}}}}`

`{\dashrightarrow{\small{\sf{Circumference_((Circle)) = (2 * 314 * 85)/(100 * 10)}}}}`

`{\dashrightarrow{\small{\sf{Circumference_((Circle)) = (628 * 85)/(100 * 10)}}}}`

`{\dashrightarrow{\small{\sf{Circumference_((Circle)) = (53380)/(1000)}}}}`

`{\dashrightarrow{\small{\sf{Circumference_((Circle)) = 53.38 \: cm}}}}`

`\star{\small{\pink{\underline{\boxed{\sf{Circumference_((Circle)) = 53.38 \: cm}}}}}}`

Hence, the circumference of circle is 53.38 cm.

`\rule{300}{1.5}`

Answer 2

Answer: The circumference of the circle is 53.38 cm.

Explanation:

Circumference of the circle is the distance around the circle.

Formula used:

`C = 2\pi r`

Where,

C is circumference of circle

r is radius of circle

Given:

Radius of circle = 8.5 cm

Now putting all the given values in the above formula, we get:

`C = 2\pi r\\C=2* 3.14* 8.5cm\\C=53.38cm`

Therefore, the circumference of the circle is 53.38 cm.