Question

find the circumference of a circle whose radius is 49?​

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 = 308 Cm

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

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• Radius of the circle = 49 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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$\longrightarrow \sf {Circumference\: of \: circle = 2 \times \dfrac{22}{7} \times 49}$

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$\longrightarrow \sf {Circumference\: of \: circle = 98 \times \dfrac{22}{7}}$

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$\longrightarrow \sf {Circumference\: of \: circle = 308 }$

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

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• Circumference of the circle is 308 Cm.

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$\rule{300}{2}$

Answer 2

Answer:

7cm

Step-by-step explanation:

Maths keeps one mentally active. The circumference is thus 2(pi)R = (44/7)*7 = 44 cm. Cancelling π, we get r²=49 cm so r=7 cm