Question

Calculate the Perimetre of a circle whose radius is 14cm

Answer 1

Hey mate..
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Given,

Radius of a circle, r = 14cm

Perimeter of a circle = ?

We know,

Perimeter of a circle = 2πr

=> 2 × 22/7 × 14

=> 2 × 22 × 2

=> 88 cm^2

Hope it helps !!!

Answer 2

$circumfernce = \pi \: {r}^{2}$
${r}^{2} = 14 \times 14$
${r}^{2} = 196$
$circumfernce = \frac{22}{7} \times 196 \\ = 22 \times 28 \\ 616$
#ninja