Question

radii of circle are given below 28 cm​

Answer 1

According to the question...

r=28cm
area =
$\pi \: r {}^{2}$
Perimeter =
$2\pi \: r$

Answer 2

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$r=28 cm \\ area=\pi r^2 \\=\frac{22}{7}\times 28\times 28\\22\times 4\ times28\\=88\times 28\\=2464 cm^2$

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