Question

Alex cut a circular shape out of a piece of paper. If the circumference of the circle is $31.4$ units, what will be its diameter $(\pi =3.14)$?

• A. $20$ units
• B. $10$ units
• C. $15$ units
• D. $62.8$ units

Answer 1

The correct option is B $10$ units

Given: Circumference of the circle $=31.4$ units

Circumference of a circle $=\pi \times d$

$31.4=3.14\times d$

$\frac{31.4}{3.14}=\frac{d}{3.14}$

$d=10$ units

Therefore, the diameter of the circle is $10$ units.