Question

The radius of a circle is 2 feet. What is the
circle's circumference?
r=2 ft

Answer 1

`\sf\large\underline{Given:-}`

`\rightarrow` Radius(r) of the circle = 2 ft.

`\rightarrow` Value of Pie(π) = 3.14

`\sf\large\underline{To\: Find:-}`

`\rightarrow` Circumference of the circle.

`\sf\large\underline{Formula \: Used:-}`

`\rightarrow` Circumference of circle =
`\sf{2πr}`

`\sf\large\underline{Solution:-}`

`\rightarrow` Circumference of circle =
`\sf{2πr}`(putting the value of π and r from the above given)

`\rightarrow`
`\sf{=2×3.14×2}`

`\rightarrow`
`\sf{=12.56\: ft.}`

Therefore, circumference of the given circle =
`\sf{12.56\: ft.}`

_____________________________

Hope it helps you:)

Answer 2

Given -

• the radius of a circle is 2 feet. ie. r = 2ft

ps - use 3.14 for π

To find -

• the circle's circumference

Solution -

We know to find the circumference of a circle we use the formula C=2πr.

Doing the same,

C = 2 × 3.14 × 2

C = 12.56 feet