Question

Work out the circumference of this circle.

Take a to be 3.142 and write down all the digits given by your calculator,
16.8 cm

Answer 1

50.90 cm

Explanation:

The computation of the circumference of this circle is shown below:

As we know that

The circumference of this circle is

= 2πr

where

π is 3.142

r = diameter ÷ 2

= 16.8 ÷ 2

= 8.1 cm

So, the circumference of the circle is

= 2 × 3.142 × 8.1 cm

= 50.90 cm