Question

The radius of a circle is 35cm. Find its circumference. Taking value of
$\pi \:$
​

Answer 1

Answer:

$\boxed{\sf Circumference \ of \ circle = 220 \ cm}$

Given:

Radius of circle (r) = 35 cm

To Find:

Circumference of circle

Step-by-step explanation:

$\sf Circumference \: of \: circle = 2\pi r \\ \\ \sf = 2 \times \frac{22}{7} \times 35 \\ \\ \sf = 2 \times \frac{22}{ \cancel{7}} \times \cancel{7} \times 5 \\ \\ \sf = 2 \times 22 \times 5 \\ \\ \sf = 44 \times 5 \\ \\ \sf = 220 \: cm$

Additional information:

$\sf Perimeter \ of \ rectangle = 2(length + Breadth)$

$\sf Perimeter \ of \ square = 4 \times Side$

$\sf Perimeter \ of \ parallelogram = 2(Sum \ of \ adjacent \ sides)$

$\sf Perimeter \ of \ triangle = Sum \ of \ all \ three \ sides \ of \ triangle$

Answer 2

$\bold{<u>Question</u><u> </u>-}$

The radius of a circle is 35 cm . Find its circumference.

Given :-

Radius of Circle = 35 cm

We have to find :-

Circumference of Circle

__________________________________________

We know that the circumference of the circle

$= 2\pi\: r$

$\pi \: \: \: \: value \: is \: \: \: \: \frac{22}{7}$

Step by Step : -

Circumference of circle = 2π × Radius of Circle

$c = 2 \times \frac{22}{7} \times 35$

$c \: = 2 \times 22 \times 5$

$c = 10 \times 22 \\ c = 220cm$

Some Important formula Related to this Chapter

$1). \\ c =2\pi \: r \\ c = circumference \\ \pi = the \: constant \: pi \\ r = radius \: of \: the \: circle$

$2). \\ area \: of \: semi \: circle = \pi \: {r}^{2} upon2$

$3). \\ area \: of \: circle = \pi \: {r}^{2}$

$4). \\ perimeter \: of \: semi \: circle = \pi \: r$