Question

Estimate the circumference of the circular base of the object.

• Tube of lip balm with radius 0.5 mm

Answer 1

Given: Radius of the given object (r) $=0.5$ mm.

We know that,

Circumference of the circle (C) $=2\mathrm{\pi r}$

⇒ C $=2\mathrm{\pi r}$

⇒ C $=2\times 3.14\times 0.5$ [Since, $\mathrm{\pi }=3.14$]

$\therefore$ C $=3.14$ mm

Hence, the circumference of the circular base of the given object is $3.14$ mm.