Asked by Miracle

A paper cone has a base diameter of 8cm and height 3cm. If d cone is cut and opened out into d sector of a circle, what is d angle of d sector?
Answered by mathhelper
" ... is cut and opened out into d sector..."
I would expect to have only one sector.
Check your typing.
Answered by oobleck
Since the slant height (5) is the radius of the original circle, the angle is
(8π)/(10π) * 2π = 8π/5
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