Question 1106474
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piece of wire in the form of an arc of a circle of radius 28cm subtends an angle of 45 degrees at the centre of the circle. 
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{{{2*pi*28*(1/8)}}}


{{{pi*(2*2*2*7)/(2*2*2)}}}


{{{highlight_green(7pi)}}}-----the length of this piece of wire




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 bent into the form of a complete circle. Find the radius of this circle.
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{{{2pi*r=7pi}}}

{{{2r=7}}}

{{{r=7/2}}}

{{{highlight(r=3&1/2)}}}-------------radius of the piece when formed into a circle.