The circumference of a circular field is 528 cm. Then its radius is __________. Options: A . &nbsp 42 cm B . &nbsp 84 cm C . &nbsp 72 cm D . &nbsp 56 cm

The circumference of a circular field is 528 cm. Then its radius is _________

Question

The circumference of a circular field is 528 cm. Then its radius is __________.

Options:

A . 42 cm

B . 84 cm

C . 72 cm

D . 56 cm

Answer: Option B
:
B

The circumference of a circle with radius r is given by
$2 π r .$
Hence,
$2 π r = 528$

$r = \frac{528}{2 π} = 84 c m$
$(π = \frac{22}{7})$

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