Question

The diameter of a circle is 7 cm.its circumference is what
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Answer 1

$c = 2\pi \: r \\ \\ c = 2 \times \frac{22}{7} \times 7 \\ \\ c = 2 \times 22 \\ \\ c = 44 \\ \\ d = 2r \\ \\ d = 2 \times 7 = 14$

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Answer 2

Question:-

The diameter of a circle is 7 cm.its circumference is what ?

Answer:-

• The circumference of circle is 21.98cm.

Given:-

• Diameter of circle = 7 cm

To find:-

• Circumference

Solution:-

$\boxed{ \large{circu</u><u>m</u><u>ference = 2\pi \: r}}$

• Radius of circle =7/2=3.5 cm
• The value of $\pi$is 3.14.

$\implies \: circumference \: = 2 \times 3.14 \times 3.5 \\ \\\implies \: circumference \: = 21.98 \: cm$

The circumference of circle is 21.98cm.