Question

A piece of wire is bent in the shape of an equilateral triangle each of sides 44 cm .If it is re-bent to form a circular ring, what is the diameter of the ring so formed​

Answer 1

Answer:

Length of wire = perimeter of △

=3×4.4⇒13.2cm

Now, the circumference of circle = length of wire

2πr=13.2

r=

2×π

13.2

r=2.1cm

Area of circle ⇒πr

2

⇒π×(2.1)

2

⇒13.86cm

2