Question

Find the circumference of a circle whose radius is 7cm?​

Answer 1

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$\huge{\underline{\underline{\sf{\blue{SOLUTION:-}}}}}$

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$\sf{\underline{\green{AnswEr:-}}}$

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• Circumference of the circle = 44 Cm

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$\sf{\underline{\green{Given:-}}}$

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• Radius of the circle = 7 Cm

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$\sf{\underline{\green{Find:-}}}$

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• Circumference of the circle = ?

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$\sf{\underline{\green{Explanation:-}}}$

$\sf{\underline\purple{Formula\:Used\:Here:-}}$

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$\bigstar\boxed{\sf{\red{Circumference\: of \: circle = 2\pi r}}}$

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$\sf{\underline{\pink{Putting\:the\:values:-}}}$

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$\longrightarrow \sf {Circumference\: of \: circle = 2 \times \dfrac{22}{7} \times 7}$

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$\longrightarrow \sf {Circumference\: of \: circle = 22 \times 2}$

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$\longrightarrow \sf {Circumference\: of \: circle = 44 }$

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$\:\:\:\:\dag\bf{\underline{\underline \red{Hence:-}}}$

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• Circumference of the circle is 44 Cm.

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$\rule{300}{2}$

Answer 2

Circumference of a circle = 2πr where r is the radius

Therefore circumference= 2×3.14×7 = 44 cm

hope it helps...