Question

find the circumference and area of circle of radius 20 cm. (use π = 3.14)​

Answer 1

Answer:

C≈125.66cm

Step-by-step explanation:

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Answer 2

Answer:

$\mathfrak{ \large{\blue{ \underline{ \purple{ Given: }}}}}$

• Radius of circle = 20 cm
• Value of π = 3.14

$\mathfrak{ \large{\blue{ \underline{ \purple{ To \: Find: }}}}}$

Area and perimeter of circle

$\mathfrak{ \large{\blue{ \underline{ \purple{ Solution:}}}}}$

$\:\:\:\:\:\:\:\:\:\:\:\:\: \mathfrak{ \underline{ \green{Formula \: to \: calculate \: the \: circumference \: of \: circle}}}$

$\boxed{ \mathfrak{ \star \: \: \: { \red{ \large{circumference = 2 \times \pi \times radius}}}}}$

According to question,

$\large{ \rm \longmapsto \: \: \: \: \: \: \: circumference = 2 \times 3.14 \times 20}$

$\large{ \rm \longmapsto \: \: \: \: \: \: \: circumference = \boxed{ \orange{ \mathfrak 125.6 \: cm}}}$

$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\: \mathfrak{ \underline{ \green{Formula \: to \: calculate \: the \: circumference \: of \: circle}}}$

$\boxed{ \mathfrak{ \star \: \: \: \: \: \: { \red{ \large{area = \pi \times {radius}^{2} }}}}}$

According to question,

$\large{ \rm \longmapsto \: \: \: \: \: \: \: area = 3.14 \times {20}^{2}}$

$\large{ \rm \longmapsto \: \: \: \: \: \: \: area = 3.14 \times 20 \times 20}$

$\large{ \rm \longmapsto \: \: \: \: \: \: \: area = \boxed{ \orange{ \mathfrak{1256 \: {cm}^{2} }}}}$

$\mathfrak{ \large{\blue{ \underline{ \purple{ Hence:}}}}}$

The area and circumference of circle is 125.6 cm and 1256 cm².