A turntable has a diameter of 40 cm what its circumference

Question

asked Mar 17, 2021 107k views

1 Answer

Gulzar · Answer 1 · 2021-03-21T23:18:48+0000

Answer:

Circumference of turntable is 125.6 cm

Explanation:

Diameter of turntable = 40 cm

We need to find circumference of turntable.

The formula used to calculate circumference is:
$Circumference=2\pi r$

where r is radius

We know that:
radius=(diameter)/(2)

Finding radius first:

$radius=(diameter)/(2)\\radius=(40)/(2)\\radius = 20 \ cm$

So, radius r=20 cm

Now finding circumference

$Circumference=2\pi r\\Circumference=2*3.14*20\\Circumference=125.6 \ cm$

So, circumference of turntable is 125.6 cm