Question

The diameter of a circle is 14 cm. Find its circumference
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Answer 1

d = 14 cm

r = d/2 = 14/2 = 7 cm

Circumference = 2πr

= 2×22/7×7

= 44 cm

Answer 2

$\Large\sf\underbrace{Question:}$

The diameter of a circle is 14 cm. Find its circumference.

$\sf\Large{\underline{\underline{Answer:-}}}$

Given

• Diameter (d) = 14cm
• Find its circumference.

We know that,

$\begin{gathered}\\\;\sf{:\rightarrow\;\;cirumference\;=\;\bf{{2\pi \: r}\:}}\end{gathered}$

Where,

• $\begin{gathered}\\\;\sf{:\rightarrow\;\; Radius\;=\;\bf{{ \frac{d}{2} }\:}}\end{gathered}$
• $\begin{gathered}\\\;\sf{:\rightarrow\;\; Radius\;=\;\bf{{ \frac{14}{2} }\:}}\end{gathered}$
• Radius = 7cm.

Now, Substitute the values,

$\begin{gathered}\\\;\sf{:\rightarrow\;\;circumference\;=\;\bf{{ 2 \times \frac{22}{7 } \times }{7}\:}}\end{gathered}$

$\Longrightarrow$Cancel 7 by 7, we get

$\begin{gathered}\\\;\sf{:\rightarrow\;\;circumference\;=\;\bf{{2 \times 22}\:}}\end{gathered}$

$\Longrightarrow$Multiply the values,

$\begin{gathered}\\\;\sf{:\rightarrow\;\;circumference\;=\;\bf{{44cm}\:}}\end{gathered}$