Question

If the area of a circle is 68 square feet, find the circumference​

Answer 1

The Formula for finding the Area of a Circle =
`\pi r^(2)`

`\pi r^(2)` = 22/7 x
`r^(2)`

22/7 x
`r^(2)` = 68

22 x
`r^(2)` = 68 x 7

`r^(2)` = 476/22

`r^(2)` = 21.6363636

r =
`√(21.6363636)`

r = 4.65149047

It can be rounded up into 4.7 .

So, the radius is 4.7
`ft`.

Now to find the Circumference of the Circle, we use the Formula =
`2\pi r`

`2\pi r` = 2 x 22/7 x 4.7

2 x 22/7 x 4.7 = 29.5428571
`ft^(2)`

It can be rounded up into 29.5
`ft^(2)`.

So, the Circumference of a Circle with an Area of 68
`ft^(2)` is 29.5
`ft^(2)`.

`ft` = Feet.

`ft^(2)` = Square Feet.