Question

Work out the circumference of this circle.Take pi to be 3.142 and give your answer to 1 decimal place .The radius is 9cm .??

Answer 1

=28.3m

Explanation:

Circumference of a circle = 2πr

Where π= 3.142

From the diagram diameter = 9m

Radius = diameter/2

R = 9/2

R = 4.5m

Circumference = 2×3.142×4.5

Circumference = 28.278

=28.3m