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

Answer: 52.7856cm

Explanation:

Circumference of a circle = 2πr

Note that radius = Diameter / 2 = 16.8/2 = 8.4cm

Circumference = 2πr

= 2 × 3.142 × 8.4

= 52.7856cm

Therefore, the circumference of the circle is 52.7856cm