Question

find the area of the circle whose radius is 4.2cm​

Answer 1

Answer:

$area = \pi {r}^{2} \\ \: \: area = \pi {(4.2)}^{2} \\ area = \frac{22}{7} {(4.2)}^{2} \\ area = 55.42 \: {cm}^{2}$

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Answer 2

Formula of area circle =

$\pi \: r {}^{2}$

$55.44cm {}^{2}$

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