Question

The distance covered a minute hand of length 3.5m in an hour

Answer 1

in one hour the distance covered is 210m

Answer 2

$length \: of \:minute \: hand = 3.5m$
$so \: thi s \: is \: the \: radius \: of \: the \: clock$
therefore the distance covered is the perimeter of the clock
or, distance covered =
$2 \times \frac{22}{7} \times 3.5$
$= 22cm$
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