Question

a piece of wire is bent in the shape of an equilateral triangle of each side 6.6 centimetre it is rebent to form a circular ring what is the diameter of the Ring

Answer 1

$6.6 \times 3 \: will \: be \: equal \: to \: 2\pi \: r$
Frm this u will get r and u can get the diameter by multiplying it with 2
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