Question #0f210

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Question #0f210

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Answer 1 · 2017-06-23T16:33:10

$1 cm$ $"1 cm"$

Explanation:

We know

$circumference = 2 \cdot π \cdot radius$ $"circumference" = 2* pi* "radius"$

OR

$2 \cdot π = 2 \cdot π \cdot radius$ $2*pi=2*pi*"radius"$

OR

$radius = \frac{2 \cdot π}{2 \cdot π}$ $"radius" = (2*pi)/(2*pi)$

OR

$radius = 1 cm$ $"radius = 1 cm"$

Answer 2 · 2017-06-23T16:35:35

$radius = 1$ $"radius "=1$

Explanation:

$the circumference (C ) of a circle = 2 π r$ $"the circumference (C ) of a circle "=2pir$
$where r is the radius$ $"where r is the radius"$

$\Rightarrow C = 2 π r = 2 π$ $rArrC=2pir=2pi$

$divide both sides by 2 π$ $"divide both sides by "2pi$

$(cancel(2pi) r)/(cancel(2pi))=cancel(2pi)^1/cancel(2pi)^1$

$rArrr=1$

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Question #0f210

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