Question

Shazali took a wire of 44 cm and bent it into the shape of a circle. Find the circumference of the circle

Answer 1

Solution:-

$\sf \: Circumference \; of \; Circle = 44\\\\\ \sf \ 2\pi r\;= 44\\\\\\ \sf \: 2 \times \dfrac{22}{7}\times r = 44\\\\ \\\sf r = 44 \times \dfrac{1}{2}\times \dfrac{7}{22} = 7cm$

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$\sf Area\; of \;Circle = \pi {r}^{2} \\\\\\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \sf\dfrac{22}{7} \times 7 \times 7 = {154cm}^{2}$