Question

Find the circumference of the circle given the area. Area= 196 pi

Answer 1

ANS

Circumference =2πr

Area of circle= πr²

πr²=196π

r²=196

r=√196 =14cm

Circumference =2πr

=2×14π

=28π

∴ Circumference of circle with area 196πcm² is 28π.

HOPE IT HELPS....

Answer 2

The circumference of a circle is 87.9cm.

Given:

Area= 196 π

To Find:

The circumference of the circle.

Solution:

To find the circumference of the circle, we will follow the following steps:

As we know,

The area of the circle is given by the formula:

$\pi {r}^{2}$

Here, r is the radius of the circle.

Now,

On putting area in the above formula we get,

$\pi {r}^{2} = 196\pi$

${r}^{2} = 196$

$r = \sqrt{196} = 14cm$

Also,

Circumference of the circle is given by the formula =

$2\pi \: r$

On putting the value of the radius we get,

$2 \times \pi \times 14 = 28 \times 3.14= 87.9cm$

Hencdfoeth, the circumference of a circle is 87.9cm.

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