Question

The circumference of a circle is 3.2mm.

Answer 1

The diameter of circle is 1.018 mm.

Step-by-step explanation:

Given,

Circumference of circle = 3.2 mm

We know that;

Circumference = 2πr

$3.2=2\pi r$

Putting π=22/7

$3.2=2*\frac{22}{7}*r\\3.2=\frac{44}{7}r$

Multiplying both sides by 7/44

$\frac{7}{44}*3.2=\frac{7}{44}*\frac{44}{7}r\\\\\frac{22.4}{44}=r\\\\r=0.509$

Diameter = 2r

Diameter = 2*0.509

Diameter = 1.018 mm

The diameter of circle is 1.018 mm.

Keywords: circle, circumference

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