Find the circumference of circle
whose area as 6.16 cm sq


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1 thought on “Find the circumference of circle<br />whose area as 6.16 cm sq <br /><br /><br />​”

1. Answer:

   Area =6.16cm sq

   [tex]22 \div 7 \times {r}^{2} = 6.16 [/tex]

   [tex] {r}^{2} = \frac{6.16 \times 7}{22} [/tex]

   [tex] {r}^{2} = \frac{0.56 \times 7}{2} [/tex]

   [tex] {r}^{2} = 0.28 \times 7[/tex]

   [tex] {r}^{2} = 196[/tex]

   [tex]r = 14[/tex]

   [tex]circumference \: = 2\pi \: r[/tex]

   [tex] = \frac{2 \times 22 \times 14}{7} [/tex]

   [tex] = 88 \: cm[/tex]

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